@Krista & Copernicus
How are you guys doing?
For constipation, it might depend on whether you have a stool firmness issue, a motility issue, or both. I used MiraLAX and canned pumpkin for Tubby (the canned pumpkin didn’t seem to impact BG, despite what one would expect). Miralax does draw fluid the GI tract but one trick is to soup up the canned food. Tubby (and my other cats who have been on MiraLAX) didn’t mind soupy food so I added as much water as they would tolerate to offset the dehydration issue. Anything you can do (water fountains, tuna-laced water, etc) to encourage Copernicus to drink more water won’t hurt.
Lactulose can work but can be somewhat harsh, so it’s usually not what I reach for first.
SubQ fluids were also helpful, with the usual “if safe to use” caveat.
For motility, we had to resort to cisapride.
High BG is dehydrating so I’m glad to see you increased insulin dose again. Hopefully you’ll start reaching a good dose soon. The 19u from before was starting to look promising so it’ll be interesting to see if it will do the same now.