It takes time and patience for your body to adjust. It’s mostly trial and error to see what your body will tolerate. Even 20 years later, I can be surprised by the consistency and texture of my stools. I remember the first few months keeping track of BM’s and foods. The first year I recall 10-12 or more BM’s a day. Now, I pee more times than poop. I can go 5,6,8 hours without a BM (depending on what I eat.) The only things that I avoid are popcorn and nuts though occasionally I will eat both in small amounts. For me, chewing foods well makes all the difference.
Good wishes to you that in time, you will (almost) forget thaT you even have the pouch.
Be well.