Hi, I think how often one changes is a personal preference, with practicality being a mitigating factor. I have had my ostomy for over 55 years, and that first year I was lucky if the temporary paper and plastic pouch stayed on for a few hours. I was also in a back brace for 6 months after, so I was used to the everyday cleanup. When I got fitted for what was the "new" reusable rubber pouch, and plastic flange, I used a flammable glue to hold the things in place. A metal ring fit around the wafer and edge of the pouch to hold it together, and we used rubber bands to close the spout. Those supplies, although ugly and smelly, messy, actually got me through 3 or 4 and sometimes more days. But I had to give up baths, as soap softened my skin and caused the paste not to stick. So I showered, but was able to go in the ocean and the pool (cold water). I don't remember the timeframe, but I do remember the new disposable pouches and wafers. When I put it on for the first time, I actually cried. I couldn't even feel it, and there was "no weight". Wear time was between 5 - 7 days, and that's the way it's remained for the last 20+ (or more) years. That is, until I developed some gastric issues, which were reactions to the normal foods I was eating. It was IBS symptoms, which seems strange since I have no large intestine (or rectum). I finally went to a gastro doctor, who knew the answer immediately. FODMAPs, which are undigestible sugars, that are found in a lot of foods (beans, some vegetables, most fruits, and the worst, are artificial sugars. When ostomates talk about having "bile-like output", think more about possible food intolerances. When something doesn't agree with me, first I get gas (pouch fills up, but no output), next come the cramps, and then the profusion of yellow to green transparent liquid. The fiber may find its way out later. This was happening 2-3 times a week, even when I ate carefully. The culprit... drinking lemon or lime / artificial sugar drinks (no caffeine or carbonated drinks for me). That was the end of Crystal Lite. I've spent the last 6 months "testing" various foods and groups, and sometimes, all is well, and other times not so good. But I have a better sense now of what will trigger "the runs" and the dehydration. My diet is now quite restrictive, but I continue to test foods sporadically. While I have "the runs", I can't keep the wafer on for 6 hours, much less a few days. The acidity eats away at any wafer. It's been an upsetting and depressing situation, but I'm in better control now and try to be careful. I can get a 1 day, 3-5 days, or a full seven or more, depending on the output. Today, not so good... I leaked unexpectedly, but expected it because of a very liquid output. Just had protein for dinner. Want to lose weight anyway. Best of luck with everyone. Enjoy the summer, but stay safe.