C.R.
Sorry but I can't say that I know anything natural and I really tried alot of different things like Gripewater but NOTHING helped, not even other prescriptions but for Zantac liquid. I hated giving to my son but he was in pain and cried all the time and was never able to rest and it was only for a few months until he got older then I could wean him off. Also a product called a tucker sling helped us alot. It's to elevate him while he sleeps. It helped him sleep alot better too.
So sorry for him having reflux, it can be a very trying time for all. Hope you can find your answer and he grows out of it.
I do think that his problem will get better in time but probably not till he is sitting and standing on his own.
Best Regards,
C.