Hi,
@7-3-19wilson1 , yes, it is very scary at first. You'll go through a whole slew of emotions over the next few months, crying, anger, fear etc. I predict you'll even get annoyed when loved ones tell you, "it'll all be fine"! That's perfectly normal. But it does wear off when you start getting used to it.
I was dx'd at 21, thought my life was over, I'd just be sitting on the sidelines, but after a few months I'd learned the basic rules and went on to live a normal unrestricted life, been away backpacking in Asia for 6 months, done sports like skiing, sailing, cycling including a trip from Rome to Athens (had been planning on cycling from there up through Eastern Europe but got fed up cycling past wheat fields so sent the bike home and backpacked for 4 months from Istanbul to Estonia).
You will have to pay more attention to what you're eating, how many carbs are in each meal, how much insulin to take for it and then there's some fancy stuff like "pre-bolusing", which involves injecting a while before a meal to let the insulin get working before the food starts digesting, and "insulin stacking", which is adding in another injection if it looks like the meal injection wasn't large enough, but don't worry about those techniques for the moment, you'll pick them up as time goes by.
You'll read a lot on this site about people heavily restricting the amount of carbs they eat. They are mainly type 2 diabetics. It makes sense for them, but that's because T2 biology is different. Some T1s do it too, but it's too early for you to make decisions about that. T1s have a lot of leeway in what we eat. I went out for a Chinese buffet yesterday, and will be doing a three course Indian curry lunch today. I make minor adjustments, such as choosing salted popcorn instead of sweet when I go to the movies, and it's also always diet coke etc. instead of the sugary ones, and brown rice instead of white, but that's about it.
The carb counting can be a pain, but after a while, you can get to a stage where you can "eye ball" a meal and say, "meh, that'll be about 7 units."
Don't worry about the 20s you're in at the moment. If your levels come down too quickly it's a bit like bringing a deep sea diver up from depth too quickly. Your body needs time to adjust to lower levels, so your team will be aiming at lowering the levels slowly but surely. You'll also learn how to nudge it down with corrective doses.
Ask about Freestyle Libre. It's a small plastic disc about the size of a £2 coin which gets stuck on your arm. A tiny sensing filament beneath the skin measures glucose every 5 minutes so you can see not only what your levels are at but also where they've been for the last few hours, so you can also predict where they might be going. You've probably not had a hypo yet, where bg drops below 4. Hypos are unpleasant, not painful, more a confusion of thought because the brain doesn't work well with too little glucose, and this is where libre is good - if it shows a number in the low 4s with a downward arrow, it's a good clue to start thinking about a bg test to confirm and then some sweeties/biscuits/dextrotabs. You can use it for a whole lot of other things too, checking basal, pre-bolus timing and so on, but leave that for later.
If you've got a kindle, there's some reading to do:
Think Like a Pancreas, Gary Scheiner - a good reference book for newbies and oldies.
Sugar Surfing, Stephen Ponder - teaches you how to use cgm/libre, and adjust levels on the fly.
Anyway, enough from me, T1 is totally do-able, it can be frustrating at times when doses don't work out as expected, but by and large once you get some of the basic rules under your belt and learn from the inevitable mistakes, you will live a long, full and healthy life!