Correct me if I'm wrong but I believe that you still have to do finger prick testing for driving. Plus, hopefully you're not totally relying on the Libre alarms to be notified of lows and highs.
Try Carb Manager as a tracking app. Urban fruits Coconut chips. They do have carbs but also fibre which works differently. Loads of keto snacks out there.
There's loads of T1 diabetics who weight train and gain plenty of muscle. Again, look on YouTube. There's loads of different opinions to gain from eating carbs and protein to gaining on a keto diet. Insulin is incorrectly and dangerously by some weight trainers. Just ensure your blood tests are...
Horrible to hear that it's got quite bad. You've answered one part yourself. You need to get your control under control. It'll help with everything. Not saying it'll solve it but future complications can be lessened. I have had Lazer treatment a few times to one of my eyes. It has helped but...
One section will be how many hypos have you had. These will be below 4, I think, a couple or so a month is expected. The next section will ask whether you've had any severe, that require someone to help you.
I use the 4mm for my Actrapid and 6mm for my Lantus. Just use arms and legs. Stopped using my stomach as it was building up a bit of fatty tissue and no buttocks. Was just told this year's ago and have carried on.