Hello. Sorry you have been waiting for a reply.
Rebound takes anywhere from 1-4 days, every cat is different.
What I am seeing looking at your chart though, is that you had a 90 midcycle on 2 units on May 5th, and the highs still around 300 and 400. That is showing that 2 units is more than enough right now and I would advise against a big increase.
You could also consider shooting a bit early, before the high 400 levels.
Say, about 9 hours after shot and above about 280.
How does that idea seem?
Forgive my lack of background knowledge here, but what are you feeding? Are there any other medical issues like an infection etc?
Please keep us posted
Kimmee