How do i start enjoying a few drinks and then being able to stop?

I only drink at social events, but after a few drinks i have the urge to get a new drink everytime. I have no problem with not drinking at all, it’s just that when i start i don’t want to stop. The feeling of drinking at first and then stopping sucks to me. How do i get over this? I would really like to be able to have a few drinks and enjoy the rest of the evening without.