Damn! It almost sounds like he needs a good clip around the ears?? How big is he??
I had a brother living with me 40 years back who was all tied up with his own life & taking me & my home unit very much for granted. I was working - he wasn't - yet he never did any housework or contributed to the kitty - he even opened my mail!! I ended up not cooking for him, not cleaning his room, not making his bed, not doing his laundry - just so he realised exactly what I was doing 'on his behalf' .... I upped his rent from a donation to a reasonable amount & made him accountable for his long distance phone calls (which back then cost a FORTUNE!) Not long after he left & found his own place! LOL
Save your energies for your chemo ..... you're gonna need it, methinks!
Take care & all the best for your first treatment xx BIG Hugs coming your way xx