Tried taking it away 2-3hrs before his evening shots
The reason to take food away before PS is to make sure that the number you are getting at PS is not affected by a food spike. When he's been in higher numbers, to be honest, it doesn't matter, but now he is getting into lower cycles more regularly it becomes much more important especially if you get to a cycle where he is green at PS, you need to be sure that it's not food influenced. I would encourage you to start taking food up at least two hours before the PS, for safety reasons.
just made his +3s crappy and it got better as soon as I stopped (Feb 20-Feb 24)
I think that's just pure coincidence he was clearly bouncing from the green he had on the 23, cycle 5 was pm on the 25th and that seemed to be him trying to clear the bounce, but clearly you hadn't got to a good dose yet. That blue on feb 19 am also looks like that triggered a bounce and that led to those icky numbers, until he went green on the 23. I'm not just seeing icky +3 in the pm cycle but high flat cycles in that period triggered by those to lows I've just mentioned.
My comments below are for your consideration, I don't know if you will find it workable, but I do believe that it could help with managing his curve and flattening him out.
Some folk do free feed, but a lot (if not the majority) find that offering mini meals at key points in the cycle can be the best way to flatten the cycle and level off the BG, avoiding bounces.
I'll try and explain why the above can help.
Feeding in the latter half of the cycle, has the unwanted effect of raising the BG at shot time, basically even a small amount of food when the insulin concentration is waning has the effect of raising the BG more than the exact same amount of food in the early part of the cycle. This tends to lead to a high amps/pmps, which is counterproductive, because once your shot onsets it causes a sudden drop in BG and that in some cats comes accompanied by the subsequent bounce.
Lantus does best and yields the flattest cycles when it can latch on to lower numbers and result in a surf.
We can try and manipulate the curve with food by feeding at appropriate times so when insulin is in higher concentration we feed to counter act a fast drop, and when there is not much insulin in the system we withhold food so that we are not overloading an insulin depleted system with carbs and causing an unnecessary rise in BG.
First time round with George, because he developed a liking for dropping early in the cycle I fed at amps, then he got a snack at PS+1 +3 +5, some folk find PS+2 +4 +6 works better for them, and at the moment I'm feeding this time round and now he is well regulated ps +2/+3 +5/+6 ish, he's older now and not moving about much so he doesn't want to get up to eat as frequently as he used to, and the BG is behaving itself, flat green cycles, so I'm OK with that.
When we feed the regular meals/snacks in this way we may adjust it somewhat if the cycle requires it.
What do I mean by that?
Well let's say I'm doing a PS +1 +3 +5 regime, cycle looks active,
we're starting with a preshot that's 120, +1 is 100, I give him his snack and then check again at +2 (the lack of food spike at +1 indicating an active cycle and need for extra monitoring) +2 is 85, still a safe number, but numbers still dropping at quite a rate and we might not yet have onset, I would add in an extra snack here, just of LC and then check again at +3, I'm adding that extra snack so he has a little more carb on board as the insulin concentration continues to rise and thus counteract a sudden drop, in the hope we can get him to surf. +3 80, give him his regular snack which is due, and check him again at +4 or +5 .
I just thought that you might want to mull over feeding in this way since I believe it would help level Jack out, additionally it puts you in control of the food and making sure he is hungry when you need him to be. I like that you add water to his meals, I do that for George to, keeping them well hydrated helps keep their kidneys healthy. I use an automatic feeder to supply him with his snacks so that I don't have to be at his permanent beck and call.
If you decide to try some thing like this you would decide on your schedule, feed a main meal at shot time and then 3 mini meals in the cycle. You would divide up the amount of food you usually give and divide it up for the different meals.
For instance with george he gets
3 ounces at PS
1 ounce at +3
1 ounce at +6
You may want to take a look at this condo there's a discussion about manipulating the curve with food, I found Jills post #15 really helpful when we were starting out, and it's what prompted me to change the way I fed George.
Manipulating the Curve with food
Also in post #20 you'll see an explanation as to why feeding after nadir can be counterproductive.