raising a baby and falling in love is a cute one (but theres no smut)
blood link and keeper of the pearl are my two favs with babies (and has smut)
https://www.mangago.zone/read-manga/whose_baby_is_it/
https://www.mangago.zone/read-manga/it_s_my_baby/
https://www.mangago.zone/read-manga/one_kid_two_dads/
https://www.mangago.zone/read-manga/demons_don_t_cry/
https://www.mangago.zone/read-manga/the_baby_that_master_brought_is_sus/
https://www.mangago.zone/read-manga/kozure_omega_to_boukun_yakuza/
Most of them are toddlers tho, authors tend to make the baby era short
BLS WITH BABIES!!! please