That's fine for a woman to do. It's just about that.
Let's not enable males to attempt to do this for fun.*
Given it doesn't work for a high percentage of women who actually have the biology to do so and have often given birth so loads of hormones, there isn't a lot of value in a male attempting this.
It also needs a lot of input when a mother may be extremely exhausted after birth and frankly needs the input herself.
We also don't know what impact the hormone blockers has on the excretions the male can make and so the baby.
*or a different word