Aibu to not tell my oh that I've flexed my hours?

[Kemer2018]

I'm fortunate that my boss has agreed condensing my pt hours from 4 into 3 days.
So I'll work Tue to Thur and have Monday and Friday off. Obviously, this will affect my annual leave so HR have been advised.
But when i told mr. I was considering changing days, he said "oh good, you can have my dinner on the table and do x y z on the Mondays if it is agreed".
I don't want to be told what to do, so I'm not telling him it's been agreed as of now.
AIBU?

Realistically OP is saving some time as no commute on one day.
Overall it doesn't seem unreasonable for the op's DH to expect dinner on the days she is off. But she shouldn't be doing everything in terms of house chores and certainly doesn't have to run errands for him.

"Realistically OP is saving some time as no commute on one day."

Has she mentioned her commute? Might be only 10 minutes for all we know.

What are you getting out of the relationship with this manchild?

Honest communication seems to be a bit of a problem in your relationship TBH