Is a 3 month old ready for a feeding schedule?

My baby turns 3 months next week. She feeds constantly. She uses it to soothe as well and she snacks a lot. The problem is that she wont take any pacifier or bottle. We've been working with her for 2 months now with that. Bought countless nipples and pacifiers and nothing. I need to be able to leave my home. I've been feeding on demand this whole time and she's very demanding. She eats every hour to hour and a half sometimes less. I make enough milk so supply isn't the issue. I make 5 oz on my left and 4oz on my right. How hard is it to set a feeding schedule? Is 3 months too young? I have a feeling she's going to freak out until I let her eat. Any tips? Should I feed her every 2 or 3 hours? Help.