Breastfed baby has colic

Help my 2.5 week old has colic. I’ve been trying to avoid colic. It was horrendous with my first. But now my exclusively breastfed baby has it. She burps after feeds but wakes up. So I have to latch her on again to go back to sleep. She always wants to be held. I’ve given infacol but you’re supposed to wait 15mins before feeding and when she wakes up from a nap there’s no time for that. When she’s having milk, she’ll struggle and gulp quickly because there’s so much of it and she’ll loosen her latch or latch off. I think this is when she’s swallowing air 😔 I’m not sure what to do