Hi I’ve just read your post, I was diagnosed T1 just before Christmas and like you it came as a real shock, I’m a very fit and healthy 52 year old, I enjoy lots of mountain biking as well as coastal walking.
But to be fair I am where I am and just need to get on with it, I have managed to get my blood sugar levels down to a manageable 6 to 9 most of the time, I’m currently injecting twice daily and have been off the Metformin for a few weeks, I do struggle understand the correlation between carb intake and insulin requirements but it’s something I’m learning about real quickly.
I’m currently reading a real good book called ‘Think like a pancreas’ and have also got a book called ‘Carb and calorie counter’ which helps understanding portion sizes, you can also get the App on your phone.
It’s difficult to understand how life will move forward with T1 but I do have a massive amount of support from my family as well as my health team and forums like this are an absolute godsend for information.
Good luck with your journey and be thankful you’ve been diagnosed with something that’s manageable and something that is a whole lot more advanced now than it was 20 years ago