I did not give anything at 2.5 as I wasn't sure if I needed too since he was about the same and I'd given something at +2.
For future reference, Blue seems to be one of those kitties that metabolises his insulin fast and early in the cycle, hence the times when he hits an active cycle the numbers typically really tumble within the first few hours.
The work that you've been doing is gradually helping you to learn how to reduce the gradient of the drop so as to ease him into good numbers by about +4 so that you can then get him to surf in the middle of the cycle and hopefully reduce the chances of him bouncing back up again as the dose wears off.
If he's level or even dropping slightly by +1 then that's your signal to monitor closely and give him the small snacks to stop him nosediving/dropping too low. The earlier in the cycle it is, the more you need to work on the principle that he's extremely likely to drop further.
There was no movement between +2 and +2.5 so the earlier food interventions had worked to slow him down, but because there was no food bump to speak of and there were several hours ahead where he was likely to drop (based on his typical response pattern to date) the assumption should be that he would drop again without a snack. So give a suitable snack, check again in 30 minutes to see whether he's dropped further or stayed level. Choose the carb content of the next snack based on whether he's dropping or surfing. Rinse 'n' repeat until he levels off in the middle of the cycle. If he's close to the 50s at that stage then give little
LC snacks to see if you can keep him surfing.
[ETA]The earlier in the cycle and/or the closer Blue is to the 50 mark, the higher the carb level of the snack. When he starts trending up later in the cycle, ease off on the snacks, and if any are needed keep to LC (unless numbers dictate otherwise).
Make sense?
Mogs
.