homework april

I’m pretty good at this months homework but 2-3 things I want to improve.
So one thing is that I often stay at my boyfriends (he lives with his mum and stepdad)
and I plan when to shop for dinner and when to cook but then they come home later or they can’t tell me when we should have dinner.
I often make a plan but then keep changing it because I want to spend time with him and have dinner and cook together. How do I plan this?
I always do all of my things on the plan/calendar but not in the order I was supposed to.
How do you plan things around this or how do you deal with that?

thanks so much for your help!