Silent reflux

Hello- I have a two month old and he seems to be suffering from infant reflux. He is uncomfortable a lot of the time especially in the afternoon and evening. He fusses at the breast, only sleeps for half hour periods, and is quite gassy. He sleeps linger at night. I often see that his milk comes up and then he's swallows it down instead of spitting. He wants to nurse quite often and get hiccups quite a bit. He also is always a little stung out since he doesn't get enough sleep. I don't eat dairy or gluten, he sleeps at in incline, I'm making sure to burp him when he eats and not to let him over eat or nurse when he's fussy. I've read that Nat Phos is helpful but would like further help please.