Hi I’ve been through the same.
I was hospitalised due to mental health when I was only 2 weeks away from my mock GCSEs, I was there 6 months which meant I missed my all my GCSE exams. I was due to resit the year but was hospitalised again and not re-enrolled. I then went to my local college to sit my math and English exams, got okay grades (a 6 in English and C in maths) but I really wanted to do a levels, I had to get a B in maths which I was devastated that I didn’t. After a lot of meeting and stuff I was then allowed to start a levels!
So now I’ve just completed my AS year doing physics, maths and computer science. Hoping to get into A2 and go on to the navy/ RAF as an engineer apprentice or uni doing mechatronics and robotics.
Trust me it’s been hard and I didn’t think I would make it this far or be able to cope as I hadn’t been in education for 2 years prior, didn’t study any science (I was really bad in secondary school too, always got D’s) and I’ve been getting quite high scores in physics, better than people who got A grades in GCSEs.
It may seem hopeless now, you may feel lost but if you want it you can do it! In maths I was predicted an A in GCSE before I was pulled out but honestly I’ve always struggled with maths even though I love it. I have done appalling in my AS year, though they’re keeping me on as they believe in me and give me leniency due to circumstances like you!
I remember one night I was walking with my mum and she was being really mean about it all, and I just sat behind the bin and cried because I thought I wouldn’t ever be able to get an education.
I didn’t do triple science, and I don’t think it matters to do science at A level.
Just try your best, everything will work out.
You can always message me if you want any support or whatever as we have been through the same experience!