Taking Further Maths A Level In A Gap Year

I've recently started a gap year after achieving results beyond my predicted at A*A*A* (History, Maths, Economics) with intent to study Economics at top universities however I've arrived at the same conclusion several times of my chances being limited due to lacking FM as an A level. I've also applied for the TMUA if it's any help in knowing. My question is how would I go about taking FM as a course and how long it'd take to complete: my set deadline is next year September and I'm wondering whether I could complete the course before then.

I'm pretty much doing the same thing as you in terms of a gap year for FM. I started AS FM just after A-levels at the start of July and probably finished CP1 in maybe a month or 2. Then did about a 3rd of CP2 and some FM1 just before school started again. Now, I'm back at my 6th form to just do FM (specifically D1 because I cba learning it myself because it's so dry) and I am getting ahead of all of the Y13s in CP2 because I've got so much free time compared to them. I would say it's definitely possible to finish for exam time and get a good grade if you put the work in. Mr Bicen on YouTube is mostly what I used when I was learning it myself in the holidays. Maybe ask your college/6th form if they would let you back on to do both years at once. If it's too late for that, just use Mr Bicen and get the textbooks online. I have a website I downloaded them from if you would like me to send you.

do exam centres not let you do the a level paper itself without AS section beforehand or is this just like a prerequisite for your sixth form? also i might be bugging or is AS fm not just all of a level regular maths. and uh, do exam centres not typically offer fm because im not certain whether my sixth form would let me re-enter just for fm.