okay, I need some clever advice from those who may have been through this. I have four felines. Pele and Scarlet are male brothers, 2 years old this March. Bijou is a female, shelter adoptee, 1 1/2 years old. Frank Sinatra is a kitten, 12 weeks old. I free-feed them dry food and they get about a tablespoon or so of wet food each, every day as a treat. Before we got the kitten I had been giving them half and half of Nutro weight-management and Nutro hairball management because, well, they get hairballs (all Persians) and because Pele has gotten huge since his neutering (he's an emotional eater), as well as Bijou starting to look a little chubby. But since Scarlet isn't fat, I only gave them half weight-management formula. Well, obviously I can't continue to do this with a rapidly growing kitten!
And it's impossible to separate them as far as feeding. They've all been raised since weaning to free-feed. Any advice on how to ensure the kitten gets kitten nutrition while not enabling my couch potatoes to get even fatter?