This is not in the best interests of the baby.
No man can ever ever ever be a woman, no matter what they do to themselves and call themselves, and as upsetting as it is for men to invade women's spaces this is a whole new level of depravity.
The poor child. A real mother does what is best for her child which is why they often make the painful decision to switch to formula if breastfeeding does not work for them. It's about he child, not about the parent, or dad in this case.