I moved Connor from sma gold to sma lactose free because we thought he had colic but then found out from HV after getting some results from tests he had done in hospital that he was lactose intolerant. After about a week on it he was like a different baby, no constant screaming because he was in pain, bringing up his wind much easier and he started sleeping through and he's alot easier to settle. Have you thought it may not be colic because like you we had tried gripe water, infacol, detinox colic drops and nothing worked. I actually think we made him worse by giving him stuff for colic because he never actually had colic in first place.
I hope that makes sense because ive rambled on abit
I hope that makes sense because ive rambled on abit