Bottle feeding help!!

I really need some help right now... I have had to move to bottle feeding as my baby has an intolerance and i Have a low supply. He is 8 weeks old and has always got himself to sleep whilst breast feeding. He found it super comforting and wanted to feed all the time!! Anyway, since he had been bottle fed (only 3 days) he cannot settle and get back to sleep with his bottle, I’m not sure if it’s because he doesn’t like feeding or if it’s constant burping but he can’t get himself to sleep unless he is exhausted. Also he is feeding every 2-2.5 hours and having 4/5 oz is this normal? Need some help!!!