OP, you're the expert on your own relationship. I really suggest you either get back into therapy or continue with therapy as it sounds as though you were making great strides.
People don't respect doormats and running around after someone who drank themselves into that state, is doormat behaviour. Let him sort out his own hangover snacks.
Pick him up on his inconsiderate and hypocritical behaviour. What were you saying or doing when he was munching on biscuits and lecturing you on bad food? Did you say, 'Excuse me but you're hardly one to talk. Come back to me when you can practice what you preach.' Or did you just stand there?
Being bought up by abusers means that your boundaries are either skewed or non existent. As you become healthier, you start to notice bad behaviour that you didn't notice before. You start to notice when someone is disrespecting you.
Likewise, you don't need someone to validate you and call you a good girl when you do something for them, that's needy. You need to start validating yourself and that comes from healthy self esteem.
Don't be a martyr simmering in passive aggressive resentment. Do something for someone because you want to, not because you want validation or brownie points. You chose to run around after him when he was hungover.
Are you negative? When does he say it? He could be a. saying it because you are a bit of a Debbie Downer or b. because he doesn't want to be criticised. Think back to when he says it and if it's b he wants you to shut up and stop criticising him.
The 15 minute thing sounds like passive aggression.
Get back into therapy OP. Discuss all this with a therapist who can reflect it back to you.
Start to work on your boundaries. Pick him up on when he's being inconsiderate or rude to you.
Stop being a martyr and expecting praise for things you choose to do and work on your self esteem so you aren't looking for outside validation.
You'll soon find out if it's toxic behaviour or if he's just inconsiderate. If he's doing it on purpose, he'll push back and escalate. If he's inconsiderate, he'll try to change his behaviour because he cares about you.