Hey hon, I agree with both of you re: the discomfort. My DS will wake, cry, and resettle often during the night, when he's unwell. Either he has a cold or he's reacting to some foods.
Now IIWM... I'd stop all solids for a few days and see if it helps with the wakings. Then I'd re-introduce them again one at a time and see if he gets the wakings again. I'm like that, I like to get back to a baseline everytime we have any issues with DS and then start again. It's not ideal, I know, and I don't know how picky he is but stopping and the restarting solids can sometimes be difficult with some LO's. But imho, if it's causing gas and discomfort at night, it's a fail. kwim? his system is having trouble with the food, even though it's not affecting his reflux. he definitely seems to have a very sensitive digestive system (which is common with refluxers / mspi LO's). I know it's probably not what you want to hear, and I know this is my own approach and you may prefer to keep on with the solids (which is fine!
, but then, it means you're waiting for him to outgrow it, yk?