The post-takedown experience is different for everyone so a lot of surgeons don't tell you there will likely be a period of "adjustment" (never did like that terminology). How long it lasts is up to your body - hard to tell. However, you might start trying to implement some of the pouchitis relief preventatives / remedies since they seem to help before anything else.
I'm not saying you have pouchitis because you likely don't. However, it takes time for your body to heal and get its intestinal flora back in line and things like probiotics and antacids may help speed that along (though ramp up slowly on any probiotics so you're not creating even more gas).
This will pass... we just can't guarantee how long it will take. For me it took months, and I was miserable. I empathize that hearing it will take time is not helpful, but it is true
Steve