Hello, Nick10136.
It's nice to know you are doing well after one month. I manage consistency and frequency with food and it works really well for me. I haven't used any fiber supplements since shortly after takedown. There are times when I "produce" perfectly formed normal stools, as if I had a perfectly healthy colon! I eat lots of roasted zucchini and, believe it or not, lots of roasted Brussels sprouts, and soluable fiber foods. Lots of basmati rice, or plain white pasta with chicken and pesto sauce, or just a drizzle of good olive oil, salt and pepper. I cook all vegetables, can't eat anything raw, and avoid and nuts and seeds because they don't break down for me, but I eat anything I want, including spicy foods. I am 3 years old. It took almost a year before I felt like I mastered the new life. I follow (most of the time...) food recommendations for diabetics because I am diabetic, and it works 95% of the time. It's very low sugar, low carbohydrates, low fat, high fiber, proteins. The 5% is when I've fallen off the wagon into a carrot cake.
Your j pouch will mature. What used to be part of your small intestine needs time to learn to behave like a colon. As far as passing gas, I don't think any poucher can do that standing up, although my ostomy nurse in hospital told me that the body (and the muscles back there?) instinctively learns what is gas and what is stool and knows when to hold on. She was right. It's okay when you make a small error. It sounds like you'll be fine.