My little man was the same with wind/colic (who ever said BF babies don't suffer wind are taking tosh!)
Oliver never slept on his back, ever..he just couldn't settle. so we used a v-pillow and he'd sleep on his side and the v-pillow supported him. then when he'd wake for feeds i'd swap him to the other side.
You can get sleep positioners too but save yourself about £30 and use 2 rolled up towels and a sheet over the top of them and lay baby down on top.
Also, when Oliver turned 1 mth we moved from infocol to gripe water, that seemed to work a bit better..its like he became immune to the infocol after a bit.
Massage too worked well