Ah OK!

That's a good bump. You want to continue to test and feed every hour - it's possible that numbers might dip again after the carb wear off (typically 2 hours after).
If you are following SLGS, then a drop below 90 earns a reduction. You would go down to 4.5U from tonight.
Does he get food at night after you've gone to bed? That might prevent his numbers from dropping low. many cats see active cycles at night.
It's good you didn't skip. If you can monitor, you can shoot any number over 90 when following SLGS. Even if you had skipped, the depot would have continued to affect the first part of the cycle.