Hi Sherry, I noticed that he likes to start dropping and then he really goes for it!
For example on 1/18 he was dancing around with lower numbers all day - so you shot a nice 185 in the evening...and he dropped to 114 - that was a clue that he was headed back to the lagoon...would have been good to get another test at 3+ that night to see if he was still moving down - by the time you tested him at 4+ he had dropped too low - and was given a reduction. Sometimes when you reduce after one drop below 50, they don't hold the reduction well...and the end up going back up. So after many trials at this myself - we were told to feed that downward curve - I finally got the hang of that - and now I can - most times - keep Luci from dropping down under that line by 1)Frequently testing her when she's dropping and 2)Adding a little MC food to her LC food...just a teaspoon so as not to send her soaring either...I want her to surf, not soar and not drop...and it's a fine line when you're trying to figure out what foods Blackie is sensitive to - if any.
In this case, every cat is different...so if you can, jot down in your remarks what you've fed and when and see if you can strike a balance on slowing him down when he's headed down, down, down...and just enough medium carb food to keep him in that good green zone.
I have to admit, that's a tricky one and we worked hard at it for a long time...and still sometimes Luci slips by me and throws me a lime green...and then sometimes I think I know she's headed down because of a big 100 point drop (like yesterday) and I fed her a little MC and she jumped way up high. So there are no guarantees - but it is worth the effort to see if you can steer Blackie with the foods...just a little with each test...
Best of luck to you and let's hope this new dose is 'the' one that is the magic for Blackie!