Don’t do it - unless you want your struggles to double.
either he will refuse and you’ll get loads of ‘I told you so’ = you’ll regret it.
he agrees, it turns into a nightmare because he isn’t reliable, isn’t there when he said
he Would be, your child grows confused with abandonment issues, ex becomes entitled in the upbringing = you’ll regret it.
he agrees, he’s the knight in shining armour in your life, he’s wonderful reliable… ask yourself why this didn’t happen in the first place?
Don’t do it.
find a network of worthy friends, faux aunties and uncles, family, pay for help, teach your child to be more empathetic with you. Build resilience, find mental ways of coping.
your life will be infinitely better than with a man who abandoned you both.