I can tell you that it will definitely get easier. I know I was diagnosed in January and I know that sometimes, I still struggle. Sometimes, you will have a high. But as long as they don't happen very often, you HbA1C shouldn't that bad. I hope this can help.
If there is anyone out there (which I'm sure there is) that is 13 and has type 1 diabetes, send me a dm (direct message). Please, I feel so alone sometimes and I just need a friend that I can talk to about diabetes and stuff.