* Long Post* HELP!!! my baby’s “reflux” is at an all time high

My son has spit up since about 3 wks old it increased & by 2 months he was spitting up so much he was choking. This spit up looked & smelled like formula.. dr recommended adding cereal to bottle so we add 1 tbsp per 2 oz..we have switched bottles added cereal sit him upright burp often etc I feel like I’m at a dead end 😭 the spit up is now extremely acidic it smells like actual vomit he is constantly burping & they reek he gets very wet hiccups multiple times a day..he will be 5 months at end of week & tonight has been the worst! He went from puking formula/oatmeal/acid 2 hrs after a bottle to just clear acidic puke..he was hungry but couldn’t eat bottle without gagging & choking multiple times..his little belly was bloated & he ended up pooping yellow liquid poop whining & finally going to sleep belly gurgling

He is going to see pediatrician ASAP I don’t want him on medicine if a more “natural” solution exists..anyone use Colic Calm & found relief for baby ?? Should I take him for GI screening??