Is AS/A level maths unachievable for me?

So basically I'm applying for A level courses and iv'e read that one of the most desired and core subjects in A levels is mathematics, I got a B on my GCSE's for maths but at a oddity, iv'e basically cheated on it, I came to the exam late and for that I had a bit of extra time at my hands and I could not answer most if not all the questions on the exam cause I bunked so much that I basically fked myself over but luckily I had my teacher there for at the risk of his job help me answer more than half the exam since we were basically the only one's in the room, so now I have a B for my GCSE's and I'm wondering if I should use this opportunity to take on A level maths but within two months I have to re learn fully my higher tier maths and take on some A/AS level style books and revisions is this achievable? Can this really be done in 2 months? I know for a fact mathematics is one of the most essential degrees that you would need for any job or any universities. (Side note, other subjects I wish to take on are accounting, law and either economics or business has to be one of them only) but sadly I think acc and law are considered "soft" subjects and probably won't help too much in uni that's if I'm planning to go since the fees at uni are high as **** and is it worth it to go uni? I have 6 GCSE's and a BTECH for business at merit, but this is sooooo low compared to my friends they are all on A star and B's at the very least having at least 10 GCSE's or equivalent and sad thing is I'm chinese and I'm **** at maths and science ahhh but thats for another question later...ty for reading.