Question about swapping baby’s formula! Long post lol

So I had my beautiful healthy baby boy FEB 1st. He seemed great at the hospital with the bottles etc. Now he just fusses and gets pissed off at every feeding and gets gassy and hard for him to go to the bathroom (#2) he’s on regular Enfamil In the gold/yellow can. We’ll I HEARD you could swap It over like I plan on doing tomorrow myself to the Enfamil easy digest for gassy babies etc In the purple! Heard not just up and swap over the brand and all unless absolutely needed. So what I’m saying Is does everyone think It’s ok to swap from the reg Enfamil to the Enfamil easy digest? No he does not have a doctor yet he will have his first appointment 2 weeks from today! I was letting him finish that out today and going to try the other. And see If It helps his tummy! I pray Kt does cause his tummy Is just so achy and gassy he also as soon as I stick the bottle In his mouth he drinks so fastttttt like guzzling he just started that about 2 days ago! My mom said try soy based? Opinions PLEASE I’m a FTM I hate feedings cause It takes forever for him calm down cause he gets so fussy eating