(I've skimmed maybe 20) Specifically in this case, what has been fairly agreed upon as most advantageous for women evolutionarily speaking is having sex with «macho»
men around ovulation and returning home to their «beta males» to help rear their child.
Higher levels of progesterone and estrogen impede milk production, which is why supply may temporarily diminish
around ovulation and
menses if a woman's period returns while she's breastfeeding.