AIO for stopping sending my child with supplies when they sees their dad

As the title says …

For background, my child is 8 months old. Me & her dad have been separated since she was 4 months old. He currently has her once a week (his choice, I offer more days but he only ever accepts one). I currently send her with everything she’d possibly need - nappies, wipes, clothes, formula, bottles, flask of hot water (yes I’m serious) and the rapid cool to make her bottles.

Quite frankly I am sick of doing it, I’m a full time single parent and do everything all day, every day and I truly think he should be responsible for the above when it’s his time. I shouldn’t have to think about & prepare pots of formula, and then have to wash & sterilise the bottles when she gets home, when it’s supposed to be my “day off”. I know I’d be doing it if she was in my care, but the point is, she’s not, she’s with her dad who is just as responsible as me.

Most my friends think I should have stopped it a while ago but my family seem to think it’s petty & tit for tat and I should just do it to keep the peace.

So, AIO for not sending her with everything she needs?