Husband not coping

Sending you a hug @Brownowl.  Glad you have had some family step in and help.   Take the time to step back and heal and recover.  Thinking of you. 

Pleased that you have been able to move in a way that you can manage.  It's difficult when you have a small person who needs security but it's important now for you to concentrate on yourself and that is going to be different things for different people and times.

Thanks everyone for responding. 

Hi,ditto to all the above advice. Chemo knocks the stuffing out of you and you are probably in survival mode with little in reserve to care for others as well. Could you go and stay with your mum or a relative/friend for a break and some TLC?

Ah, @Brownowl that is no good at all. It's pretty common for those close to us to have a personal crisis related to our treatment at some stage. It is not OK to get pissed for a week and make it all about them.
If you have been dealing with his dependency issues for a while you have probably weathered similar storms, but the holiday season (curse it and the bloody reindeer it rode in on) can tip folk over the top. Like the others, I can't give you any personal advice and this is a particularly challenging time to get any professional help.
If you haven't heard of the Otis Foundation https://www.otisfoundation.org.au/ maybe try to book some time away without him. That won't help today, but it will give you something to look forward to where you can spend some quality time with your daughter and not have to clean up anyone else's mess--emotional of physical.

If you feel unsafe please make sure someone close to you knows that and keeps an eye on your home situation. If you fell threatened go and stay with someone, pretty much anyone, and tell him you will discuss things when he is sober.  Mxx

This is very hard stuff to cope with. @Sister is right, your husband is a grown up - problem is, he’s not acting as one. Dependency may have been present for a long time but becomes impossible when you can no longer carry the extra load. It may not be possible but if he has to cope on his own for a little while, it may shake him into realising that he has to take some responsibility - and resolution - about his own feelings and actions, not drop them on your shoulders. He needs some expert help, certainly, but getting him to that point of acceptance will not be easy. As suggested, a male friend or good workmate may be able to talk with him. Take care of yourself. 

@Brownowl I can't add anything really to what has been said.  Unfortunately it's a situation that you can't sort - only he can.  It does sound like he needs some counselling, and perhaps you do, too.  My guess is that he won't go for it, though.  Enlisting someone, friend or family, who he will listen to is a strategy, as is a GP if you share one.  If there are things you want to say that you can't in a conversation, writing them down may work.  
One thing that may help you is to realise that it is not up to you.  Your husband is a grown man who is, no matter the reason, making choices.  For many of us, we spend so much of ourselves trying to make things right for everybody that it becomes so instinctive that we don't even realise we are doing it.  Only you know how you feel but it may be that another strategy is to take a step back from trying to solve things and concentrate on yourself and your child.  For practical things, ask family or friends for assistance (meals, driving, etc).  If you can afford it, maybe get a cleaner for the hardest stuff so that you can focus on you.  I'm not telling you what I think you should do, but suggesting other ways.  

This is tough stuff.  Whether you take action or not, make sure that you are doing what you can handle.  Sometimes we feel pressured (often by ourselves) that we should make a stand on something that we are just not ready to deal with.  Take care.

Hello @Brownowl, I’m sorry to hear you’re not getting the support you need. Because as you said, you really need it right now. Your hubby does too, but you need it more. Recovering from chemo is hard enough, having a little girl to care for even harder, and then hubby on top of all that would be impossible. I think it might be time to pull in the big guns, aka the professionals. He prob needs to see someone about his drinking problem, and also about coping with your and his diagnoses. I know his is in the past, but he might be reliving some of it. I think maybe see your GP and ask for a referral for him to find someone and help him deal with all these issues. And to help you too. I’m not sure if you have reliable family and friends nearby, but if you do now is the time to ask for help. For both of you. Good luck and check in with your progress ♥️

Hi @Brownowl, I just wanted to let you know I am thinking of you. I am always a fan of enlisting the help of a psychologist or counsellor but I also know that there are many people who would not willingly use the services. Does your husband have a close mate/relative who he would talk with? A lot of men may not be comfortable starting the conversation, but perhaps you could get that person to ‘drop over’ some time. 
Everyone deals with the diagnosis so differently, but it is really important that you get the support you need. I am in no way qualified, but I can really recommend giving the Cancer Council a call as they have support services which may be able to give you some ideas about how to handle things.
You are not ranting at all and this is a great place to come to for support and understanding. You need to be supported. At the moment the priority is your health and allowing your body time to heal. In the meantime, could you try doing a couple of day activities that you all will enjoy - picnic; beach trip - things that don’t really present the opportunity to drink so that you can spend time with your daughter and kind of break the routine. 
Take care and I am sending you a hug - the road we walk can be just so exhausting, but we are here for you. Mx