Colic

My baby boy just turned 3 months Tuesday the 29th. Well he has colic and he started to get better but last Sunday he got worse again and is crying all day. Is this normal? We supplement with formula because ever since I started working my supply went down, he hasn’t even taken the boob today. Every time I’ve tried he’s been screaming his head off and refuses to latch. I don’t know how I dealt with this because now it’s soo much harder.