Hi
@Sammiejr83 and welcome! You might find some useful information in the Parents subforum, but as far as carb counting is concerned I would recommend reviewing his insulin to carb ratios with his team at the hospital, and doing lots and lots of testing.
When you say you always go too high, do you mean you are overestimating the amount of carbohydrate, or do you mean that he is going high?
As far as accurate carb counting is concerned, food labelling these days is brilliant, and for instance you can see how much carbohydrate is in 100g uncooked spaghetti and do the maths - like, 50g dry pasta per portion (or 75, or 100, or whatever), and there's a brilliant book (and app, and website), called Carbs and Cals, which gives pictorial representations of different portion sizes for all sorts of foods. And decent electronic scales are a must!
It must seem bewildering in these early days. I was 11 and a half when I was diagnosed - EXACTLY 31 YEARS AGO TODAY! - and I remember my mum weighing everything. The recipe books she handwrote recipes in she still uses today, and the working-out of how much carbohydrate in each portion of homemade lasagne, shepherd's pie, Yorkshire pudding, rhubarb fool....... well, it's all there!
Back then (1986) there was no such thing as DAFNE (dose adjustment for normal eating) and I was on fixed doses of insulin at fixed times for a fixed amount of carbohydrate, with no leeway allowed! I don't know if your son is on MDI yet (multiple daily injections) but when I first started on MDI it was a huge relief as it offered more flexibility. Eventually (aged over 30!) I finally did the DAFNE course, which introduced me to insulin/carb ratios, and after a bit of faffing to work out what worked for me - with testing all the way - it became a great deal easier.
Take one day at a time. It's a process, a learning curve. And your new friends on this forum will help you to find the way.
Hugs!
Love Snapsy