I don't know if he's ready for a trial. He doesn't look conventionally ready with those blues and a yellow a couple of days ago. We usually start a trial on a Green ambg/pmbg
How long was he on the Steroids for before you realized he was diabetic? When were they stopped? were they injections or tablets?
Temptation treats are very high carb, I'd clear the house of those too.
Let's see what he does with all the HC out of the house.
On a complete LC diet we know he is ready for a trial if his cycles are mostly all green. We are not seeing that, the picture may be muddied by the dry HC he's been having, and the HC you gave him last night to bring him up, he wasn't in danger last night, he may have just surfed for you, he wasn't dripping fast from +2 to +3 some LC might have done the trick.
This mornings 147 and then him still being in the140's two hours later makes me think he may still need some insulin support, I'd have been much happier if I saw him drop a few hours after his food, as that would suggest that his pancreas was awake and working. With the temptations last night it maybe that they are not fully out of his system and that's why he's not going green, not sure how likely that is.
If he is still in the mid blues tonight or higher.
With dry out of the picture, and you getting rid of the HC dry in the house, maybe you could follow TR for tonight and the weekend, see if you can get him all green for the weekend, ideally I would want to see him all green for a week before taking him of insulin altogether, but I understand if you feel that you don't feel comfortable with that during the week. With TR you would take a reduction if he dropped below 50, the idea however, over the weekend would be to keep him on that drop of insulin, using LC food, maybe MC.
Then see where he is at on Sunday night and go from there for the week ahead, it may be that with the data you gather over the weekend and seeing his response to food that you feel you can keep him on a drop.
But you don't have to decide until sunday, and at the end of the day the decision will be yours as to what you are comfortable with.
If you don't try it this weekend and he continues to give you blues, you might find yourself chasing those raising BG's and it could set you back. Being a little bit more aggressive now may help to get him regulated and OTJ and have it stick.
Look at Georges SS, you will see what the numbers of a cat that is ready to go OTJ looks like. April 2016. (I was only feeding LC with those numbers).
I know it's going to be harder for you to take that leap of faith because you feel you haven't got the data to support it, he has only been diagnosed as diabetic for a very short time.
If he is green or in the very low blues
Then play a wait and see game. Lets see if he can come down to green and stay there on his own. This is advice tailored for you and Henry, given the combination of circumstances we have, very newly diagnosed, unconventional dosing, dry food just removed, steroids only recently stopped.
If you play this wait and see game it's goin to be important to monitor over the next week, just as you have and if he doesn't come into normal numbers you may need to restart next week anyway, to try and grasp and hold to a strong remission.
George was knocked out of remission by a steroid shot given to him by the vet, have a look at the 2019 tab, it took 10 days for it to work out of his system. I managed to get him back OTJ but it was harder that time round. You might find it interesting to see how that affected his BG, he had been in remission, nearly always testing green for over 3 years at this point.
Then we had an accident, I had my civies on some dry food whilst they were at the kennels whilst we were on vaccation, I picked them up and DH left the bag with the kibble in the hallway, I realised he'd eaten some, you can see it sent him onto the yellows, 4/13 I waited to see if he would come back down, in the end I had to restart insulin. I started with 0.1u and supported him with that for a while then we took a reduction to a drop, and eventually went OTJ by endo of May.
Again another illustration of how HC dry can really throw a spanner in the works.
That shows you what steroids and HC food can do to a cat that's in remission, I was able to get him back there, but I was on it straight away, I didn't wait too long before restarting insulin.
I went out and bought Dr Elsey's Complete Protein yesterday as it was the lowest carb dry I could find, under 10% apparently. Have a bag of Ziwi Peak on order too which is even lower carb.
That's better I would keep henry on a purely wet diet and avoid him having even the LC dry on a regular basis, we have seen cats here that do well on the LC dry, but others have found that they have had a problem with BG when feeding the LC dry and cat's have done better when they made a swap to an all wet LC diet. But in your situation at least it won't be such a big deal if he sneaks a piece.