sorry but no, it's one from korea, if i remember correctly it was the mom idea to turn the uke into an omega since she also did that with her husband.
May be this one? -
https://www.mangago.me/read-manga/lima_syndrome/
https://www.mangago.me/read-manga/minmotion_syndrome/ -- perhaps this one? the uke isnt an alpha or beta but there is drugging involved to basically manipulate his pheromone stuff
Unfinished business
Hi, I'm trying to find the one in omegaverse from korea. The seme who's an alpha turned the uke who's beta or alpha(Can't remember) into an omega by using a drug.