I was reading the other day that infants have a "sucking quota" lol and have a certain amount of sucking they need/want .. Some babies more than others. If you're feeding from a bottle it could be he just still wants to suck more but isn't hungry. I'm ebf but I have a quick let down and baby is full in like 8 minutes (sometimes less) , but wants to suck more. He gets upset because he's not hungry but wants to get back to sucking. So the paci helps with that for us. Another idea is try a bottle nipple that has a slower flow? So it takes longer for baby to eat? Maybe worth a try !
Re: Teething?