Sparky, having felt myself to be in fairly similar situations with others, I feel for you. Resentment and exhaustion are not healthy. When asked 'well then, tell me what needs doing'?..I tended to go with 'have you not got f@cking eyes, what?.., I'm your seeing-eye dog now, too'? Etc. None of this was helpful.
I like the lists and rota suggestions. You'll still be your partners seeing-eye dog, but crucially, you should get more time to frisk around in the bath/go for walks in the park etc.