Stressed for Year 12

Hey everyone. I just wanted to ask on how to deal with stress for Year 12 unit 3 this year (I'm in Year 11 still but starting unit 3) and up until externals. I spent alot of time, putting effort into Year 9, 10 and of course 11, but since Year 12 is starting, I feel burnt out a little bit and feel like I'm going to fail. I do acknowledge that I have a strong case of exam anxiety and do tend to do well, but since its Year 12 and more content Heavy, it's been stressing me out and causing me to overthink.

I need to pass English units 3 and 4 mainly as a prerequisite to get into the uni course I want and I'm also doing a heavy content subject like psychology which enjoy but worried I won't do as well in externals as I did in units 1 and 2. My mind has constantly been focusing about these things and even though externals are a year away from me, its still stressing me. I'm also stressed about not getting my QCE upon leaving school and not going to senior prom or graduation.

I've just been so stressed out and I have not really given myself a break from school sometimes even on the weekends and holidays. I want to have a healthy work life balance where I wanna do well academically, but at the same time, still have a life life in Year 12 with my hobbies, socialising with friends and spending time with family.

Does anyone have any helpful advice whos been through with this and to manage this kind of stress and how to have a good life and work balance? (I'm also thinking of seeing a Counselor or Psychologist potentially, as the school guidance officer reccomended to me).