LOL on being too tired, it's morning here in Spain. I'll try and explain it another way, or see if I can find some previous posts where others have explained it.
I had to get a few cups of coffee before answering your questions, I function better.
If he's under 100 mostly for a week he gets a reduction?
Yes. But if unsure ask the question on your condo. I used to like to see George mostly in the 50-80 range for a week before taking a reduction. But at the time I was available to test midcycle, retrospectively, when he went all green like that I didn't need to test him as frequently as I did, because he basically went really flat, he did do the high before the low thing a couple of times to. But if I needed to be out I did feed him higher LC, or sometimes even MC if I was concerned, sometimes I could tell that I had over done it, because his numbers were up at the end of the cycle, the insulin had pooped out because of too much carbs, usually he recovered pretty well from any heavy handed carb abuse on my part. I didn't let it bother me as it was a way to keep him safe. I tended to er on the side of caution if I had to be away.
If he drops below 49 on 3 separate occasions, he gets reduction? Or do I count as newbie and it's once under 50?
Reductions for one drop under 50 for a newly diagnosed cat (less than a year).
The 3x under 50 is for longterm diabetics or it can be a useful tactic if he has proved himself not to hold reductions.
Although you have had to go up after going down in dose, those reductions were not taken with drops under 50. In my experience, often, when reductions are taken when they are not earned, we see the CG having to go up in dose again. Great explanation in the thread by Gill, link below.
http://www.felinediabetes.com/FDMB/...ng-reductions-and-starting-otj-trials.150160/
So for now I would take the reductions for a single drop below 50.
Also, and this is huge (And I keep forgetting to ask till wee hours alone). Is there a no shot number over 50?
That's a hard one to answer.
Generally on TR you would aim to shoot anything above 50. But anytime you are shooting lower than usual you would want to be around to monitor, or at the very least leave some higher carb food out if you need to dash out.
A lower than usual preshot needs to be taken in context. Where are the numbers heading?
Look at the earlier numbers, are they falling? flat? or on the rise?
Say for example you were to get 90 as a pmps. Look at the preceding cycle, is this number showing a rising trend or is it falling, could he be clearing a bounce?
Say you look back at the data for the preceding cycle and you see that he was 65 @ +9, then you would say he approaching the end of duration and the numbers on the rise, as the Lantus shot will not usually onset for a couple of hours, so shooting and feeding normally will often result in a nice flat cycle.
However if at +9 kitty was at 120 say and now he's at 90, number is falling, you can still shoot, but you may need to be a little proactive on the feeding testing front. See the link to myths debunked for a super explanation.
If you shoot when a bounce is clearing the numbers can gather a lot of momentum, it doesn't mean that you should not shoot, just that you need to be aware and again be prepared to be proactive with feeding and testing.
He hasn't given you a green PS yet so what we normally suggest is that you post up for help. Someone experienced will be able to look at the numbers take into consideration the points above and advise and stick with you till the excitement has passed.
Whenever we encourage someone to shoot low, it's an unwritten policy, that they stay with you until he is in the clear. With different time zones we will sometimes, 'play tag' and one experienced member will handover to another to be sure you are not left on your own.
It may be helpful, when you get some rest, to read the sticky on
shooting and handling low numbers, I found I needed to read it many times for it to sink in. It will at least give you an idea of what to do should no one be around to help on the day you get a green.
http://www.felinediabetes.com/FDMB/threads/lantus-levemir-tight-regulation-shooting-handling-low-numbers.147/
And this is thread by Libby is also very informative, especially, on shooting low, and shooting a falling number, I know it helped answer a lot of my doubts/ questions when I started, and helped me feel more confident about shooting low.
http://www.felinediabetes.com/FDMB/threads/tight-regulation-protocols-myths-debunked-combining-merging-protocols-good-idea.111088/
I hope he does, and (anti jinx) with no bouncing involved! 
not first time either. Lol
