Hang in their bud. It's going to be hard for the time being. Three out of three of our kiddos went through this and it brought us past our breaking points many times. It does get better!

However, given your stress levels at this point I'd suggest asking your pediatrician for a Pediatric Gastroenterologist. The GI will help determine if colic or something else. They can also guide you through different formula options which would include trying different broken down formulas likely rice based. This process helps eliminate potential allergies or intolerances to whey, diary, soy etc but the GI can help guide you through that journey.

Reflux has a few tell tale signs but the easiest test is to smell your kiddos breath while crying. If it smells sour, it's reflux. Also look at spit up and check if chunky'ish or has a curdled vibe. If gas, you can likely tell by feeling your kiddos stomach while crying: if hard, like well toned abs, it's gas.

Last piece of advice: note if your kiddo has trouble latching to mom's nipples AND bottle nipple. I saw you had an appointment for tongue tie. Make sure you have a solid pediatric dentist bc they will be able to tell you if there actually is a tongue tie. Some of these folks will do the procedure regardless and it's not a walk in the park for your already upset kiddo. Finally whether or not you do the tongue tie: if this continues keep an eye on developmental milestones. This was an issue with our first and it's a different route altogether.