Greetings,
I have an ileostomy, so I am not familiar with a colostomy. I can't really offer any concrete advice or suggestions.
An ileostomy functions 24 x 7, 365 days a year. The amount and time of food and liquid intake directly determine when the ileostomy is active and the volume of output. For example, one should not eat or drink for eight or so hours prior to changing an ileostomy appliance.
I am under the impression that many persons with a colostomy can be taught how to irrigate his or her colostomy.
A skilled colo-rectal surgeon, a well-trained registered nurse, or a certified enterostomal therapist should be able to teach you how and when to irrigate your colostomy. The ability to successfully irrigate could result in giving you much more self-confidence and comfort in the day-to-day management of your colostomy.
Hope this information is helpful.
Good luck and best wishes.