I have huge time for cranial / baby osteos. I think they deffo help. Its a good idea.
After chatting on here with Davidsmom, I followed up the reflux line with my LO. The osteo I was bringing him to also actually encouraged me to follow up reflux after observing him feeding during one treatment. She thought he was displaying a lot of reflux-y behaviour when she saw me "try" to feed him.
It had actually crossed my mind a number of times since his birth but like you he was gaining weight so I dismissed it. As did GP and HV.
We saw specialist who found that other symptoms (incl gagging/apnea, snuffly nose since birth) are also classic indicators.
Interestingly he said
i) not always associated with poor weight gain - (although I guess in severe cases it is, we are not that bad really)
ii) is episodic, so good days and bad.
Both these things had made me think he didn't have it. But he does....
We are now about to try zantac as gaviscon didn't do anything for us (other than thicken his poo!)
Not sure about it only happening on one side though... we have "issues" on both sides.