I am so sorry you have had to deal with all of this.
My first had what I thought was colic, but turned out the be an intolerance for casein protein in milk. So we switched to soy, then he became allergic to soy, switched back to milk, still intolerant, then to the hypoallergenic formula, still caused issues (and was beyond what we could afford for how much he was eating). Luckily he was older (8 mo) and it was safe to use a milk alternative. We used Hempmilk for months and months, then coconut milk.
This time, we aren't able to fully BF, about 50/50, and are actually making our own formula. I personally don't trust a lot of the ingredients in commercial formula, or the canning process either. You can google Weston A Price Foundation Baby Formula Recipe and find it. It looks like a hassle, but it's really not, find the milk is the hardest.
I WISH WISH WISH WISH WISH I would have known of this as an option when I was going through all my issues with my first. I'm SO glad I know it now and am VERY happy to use it, although I was a little weirded out by it at first and thought it was crazy, I'm super happy we do it. She's doing great by the way, and the times we have had to use canned powder formula, she's had bad gas, stomach upsets, and the same colicy stuff our first had.
Just some info to think over.
Glad things are getting better, I"ve been thinking of you!