Something strange that people, and myself, have observed in diving is that being submerged in water tend to turn off nausea and abdominal pain. The theory is a combination of mammalian diving reflex and pressure will inform the body to focus on respiration and blood flow, in favor of other lesser emergencies. With personal experience with malfunctioning digestive tract, I discussed this with a researcher and it was also something he had heard from other patients.
Obviously it doesn't fix the underlying issue, and it add some risk to the diving itself, but the temporary break from symptoms are something I value a lot.
Look at the graph in the article. I did a similar one, through for a shorter period. The wast majority is thankfully not at 7+, even if some longer periods has felt like it.
Be a bit careful to not insinuate. Being at 1-2 doesnt mean everything is good. Every day is a question of "how will this day be". I know however that if I only focus on the bad days it can only go one way, and that is downhill until you die. That may sound like a cliche, but when symptoms generally only get worse, and there is no cure, then the end of the tunnel is unlikely to be great.
Obviously it doesn't fix the underlying issue, and it add some risk to the diving itself, but the temporary break from symptoms are something I value a lot.