Hey Tod...there are several ways to get the shape you need. Mine was  hard to get the size I needed. I have two things I do now as my stoma has its own personality, and changes shape often. Annoying as it was the same for 11 years!  I took the one inch whole I had made normally, placed the wafer plastic covering  onto my tummy over my  stoma, then I used strips of scotch tape to fill in the space that was there. I have eczema so I prefer to cut my wafer  to the size I need with very little skin showing if any.  After I taped up the space I was able to trace it out on another plastic from the wafer,measured it again to make sure it was the size I needed and it was done.  Good luck!

Linda filling in with tape to make a custom fit is genius. Bravo 👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼👍🏼

I can definitely see how that can be problematic. I hope your husband has had the support of a good stoma nurse to help with it.

I hope you are doing well and I really appreciate you sharing. 

I have attached a very poor photo of our Stoma to show what I mean. It changes in size and can be quite swollen at times.

What I believe happens with prolapsed stomas and stomas that simply point downward, is that they are constantly wet on the wafer, which degrades it much faster than normal. 

One thing you probably haven't tried (and I honestly don't even know if they are ok to use with prolapsed stomas) are stoma collars: https://www.veganostomy.ca/guide-to-ostomy-stoma-collars/

The idea is that they can help to keep your stoma off of the edge of your wafer, which should prevent the quick breakdown you're experiencing (or at last, that's what I hope will happen). 

Unfortunately, they may not be available in your size of stoma - the largest that Salts has is for 39-41mm (diameter) stomas.

 Bubbles