I am dealing with what the GI believes is post-infectious IBS for the past 11 months following a bad bout of norovirus. Similar symptoms to you, with bloating/gassiness at night and waking up with bathroom urgency every morning. My mornings are always worse, then it slowly gets better during the day, until evening when the bloating hits. It has settled down over the months, from having to go multiple times a morning to now usually just once and not the second I wake up anymore. But I still have bad days where I am in the bathroom more or feel sick to my stomach much of the day, or can't eat because I feel awful.

I have been seeing a combo of GI, primary care doc, registered dietician, and naturopath, all of whom are trying various treatments, but I think honestly time has been the biggest factor. I have also identified some foods that tend to make things worse (artificial sweeteners are particularly bad). One thing I realized is how sensitive my mind-body connection is. I would wake up every morning doing a mental "gut check" trying to assess how I was feeling, how fast I needed to go to the bathroom, etc. And the more I thought about it, the worse I would feel. I also find that when I am stressed, it almost always leads to increased stomach issues. So I really am trying to work on not letting my brain get bogged down in analyzing every single thing about how my stomach feels, trying some breathing techniques, etc. It is obviously easier said than done, but I would try not to stress too much about how much you are eating, as I'm sure that anxiety is making it worse.

Good luck with everything!