Hi my baby’s dad aren’t together anymore and we have a t21 baby, (nothing to do with her diagnosis she acts like a normal baby) I get like fuck all help. He said he’s not coming to see her with me around (she’s exclusively breastfed)

Last night I wanted to go out and he said yes then said “will you give me aanother chance” I’ve said to him so much I don’t want to be with him then he said “we’ll my answer is no then” it’s incredibly toxic. It’s been on my mind lately that I want him to have full care of her as I already have a 3 year old 😢 what do you think? 2 on my own is just so hard for me, it’s too much especially all alone 😓 he would have her. I don’t know what to do