Hello lovely, I've only read your OP but this is the advice my health visitor gave me for my little man who cried for 2 to 3 hours a night until aged 10 weeks and also cried after every feed. When I spoke to my health visitor about it, her tips to try were:
Warm bath covering tummy.
Lying him on his tummy with a warm (not hot) hot water bottle under him to soothe tummy.
Cycling his legs whilst he's on his back. Holding feet palm to palm and rocking legs sideways, whilst lying on floor or lap.
Or scooping with right hand down his right side whilst holding feet palm to palm.
Or rocking him face down well supported on legs.
She also said don't eat anything that gives you wind such as brocolli, cabbage, caffeine, cauliflower, garlic or other stimulants. She said if none of the above did work I could try buying Colief drops from a chemist and mixing in with feed by expressing it first, as she said sometimes colic is caused by a lactose intolerance.
I found that out of all of those the cycling the legs was particularly good. I also found that as he had trouble burping, the infacol made him cry harder as it coalesced the bubbles into one big one that still went downwards but hurt more. But giving him gripe water after every feed straight away really soothed his tummy. I had to do it every feed though without fail.
The warm bath in quiet room was also a real help. Every night at the time he started to get agitated I would put in the bath, in a bath cradle and keep putting warm water on his tummy and every now and then top the bath up with warm water, so it wouldn't get too cold for him. Once or twice he was in the bath for 2 hours in the early days as it was really calming for him. Once he started doing big yawns and it was bedtime, I'd take him out into a dark bedroom and change him and BF him quietly and then often he'd go to sleep straight away.
I found putting him in his bouncy chair after a feed made it worse and he needed to be upright for quite a while, so often he was in a baby bjorn on me, so I could look after my DD who was a toddler after feeds.
But let's face it all babies are different and these may not work for you but it's always worth a try!
Goodluck