Feeding struggles

Hey, ladies! Not sure if this is happening with anyone else but I feel like my son is getting bored while feeding. He is formula fed & he eats every 4 hours 7 oz. but the whole time he wants to look around & turns his head away from the bottle & then starts his jibber jabber tongue making noises totally uninterested in eating 🤣..it takes forever to feed him anymore. He is always watching like a hawk at real food now. 👀 how do I keep him interested in his bottle?