It does depend what you eat, if you are eating foods that are low residue then your output will be lower. Chicken, white bread, unrefined pasta and rice etc are all low residue foods so think about what you have eaten on those days and it may have something to do with it.
Me, I would love low output!
Crohn's dx 1989, loop ileo 1992, end ileo 1992. Arthritis developed 1990 Stoma abcess 1995. Azathioprine started 1995. Panprocolorectomy 1999. Stillbirth 2000, antiphospholipid syndrome dx 2000. Flare up 2004, stoma abcess and strictoplasty 2004. Low blood pressure dx with impaired kidney function 2006, fludrocortisone pres. flare up 2010, steroids, Humira, codeine.