That is a thing. I met a mother-daughter duo, they'd travel with a little bag and disappear to do that and it wasn't a big deal and they claimed results.

Really no idea, there are quite of few of these potential treatments, people actively try and hack it. It depends on the specific situation what is appropriate to try.

I'm in full remission for a very long time already against all odds. It completely ruined my childhood and I'm thankful for everyday and leave with it as a sword of Damocles.

There are many on-going studies but so far none have found a protocol that clearly and reliably improves IBD. Many people find fecal transplants compelling because they seem safe and have a plausible (albeit vague) mechanism of action, a gastroenterologist emphasized to me: at least one (elderly) person has died from a fecal transplant and another got dangerously sick; they are not without risk.