Toddler on the couch!!

My son is 14 months and he loooves being on the couch. I always enforce him to sit on his butt while on the couch. I tell him the couch is for sitting...but of course, he disagrees and think it’s fun to walk all about it and throw himself around on it and it drives me up the wall. Especially when I’m in the kitchen preparing his food and I know he’s on the couch because I can see him in our living room camera. Any tips would help. The toddler struggle is so real 😓