Omfg help me

My boyfriend’s controlling ass has gotten to the point where if I don’t text him back in the next minute or so he goes like “babe are you there????” or if he catches me on instagram he goes “oh are you on instagram????” And I’ll be like “yes, I’m sorry” and he’ll be like “oh okay it’s fine” like I can tell he isn’t fine with it and I’ll be like what’s wrong and he’s like “I’m just trying to talk to you” BUT I LITERALLY JUST TEXTED YOU AND YOU TAKE LIKE 5 MINUTES TO RESPOND. PISSING ME OFF!!!!!!!