Go to https://www.novelupdates.com/ and go to series finder - adding the tags 'yaoi', might find something you like. However, as far as I remember, majority of the type of plot you're looking for (that are translated and in the database) is leaned more towards male-pregnancy so if you're fine with that add the 'mpreg' tag.
https://my.w.tt/HCwxVKcS9X
There is 2nd book too
Cub raising association (shounen ai/alternate universe/chinese)--highly recommend! Albeit the children are not the usual kind, its downright sugary and sweetness.
https://leo-translations.com/cub-raising-association/
Ball and foreign devils (shounen ai/modern/Chinese)--the kid is adorable and the struggle is strong. Not set in an ABO but the MC has a special constitution.
https://corensi.wordpress.com/2017/12/03/ball-and-foreign-devils-chapter-1/
Blooming romance (yaoi/modern/chinese)--sad but sweet, the journey to getting that baby is half the ride, but oh so enjoyable. Love the couple!
https://shokotranslates.wordpress.com/bloom/
Hi Guys~ Anyone know by any chance, BL Novel (which has Eng translation) with the story include a child/children/kid? Something like it's a single father/relatives/or else, seme n' uke end up raising the kid or live together
And if you know, where I can read them?
Thanks in advance