Baby bottle rejection

Hey guys! FTM here. My almost ten month old has started rejecting the bottle. He’ll drink maybe an oz or two from it and then refuses to drink more. I know he’s getting more than that on the breast because he’ll just hang out there and drink and drink and drink like I haven’t fed him in 10 years. Anybody know what I can do to help him take the bottle again? I would like to go out but I worry about my baby starving.

Add: He loves drinking from the sippy cup. Should I try that?