My heart is heavy 😔

I was in a little argument with my partner. He at some point brought up our 9 month old, and how when he’s in my care alone he always has accidents (I told him he fell out of his chair on the floor one time) and here, he fell off the bed when his daughter was with him on the bed I guess he blames me. And how he doesn’t want him raised the way “I raise” him. I told him I leave him with my sister for 2 hours when I have errands to do (she’s 23). He doesn’t like that, but he leaves him with his sitter when he’s alone with him.

I just take it as him calling me a shitty mom. And idk how to come back from that. 😔 I try my best, I do the best I can for my kids (I have 3) My older 2 only have me, their birth dad doesn’t bother with them. My 3rd is my partner & I’s baby. Anyway, I’m sad. I try my best to be a good mom & avoid accidents. I try my best to bring my baby with me on errands…