@Spillsy
allocate things the boys can do to help you be it learning to put on a load of washing or hanging it out/taking it in.
Loading the dishwasher if you have one... I found cooking double batch of meals when I was ok. then freezing them helped me get through the bad days.
It is up to you about telling people about your diagnosis but it does help as some will do things like take the kids for a playdate per se and give you some space to breathe.... Christmas holidays are long at the best of times for young people.
Do you have a My Journey Kit ?
Do you have a breast care nurse ?