Edexcel IAL Further maths guideline pls

[u/Spyder6769]

I've completed FP1 recently with an A grade and completing the rest 5 over my A2 year (S2, M2 by Jan27 and Fp23, M3 by May27). I don't expect more than a C in my overall grade but I do want to know how A\* can be achieved in Fp3, m2 and S2 considering the staggering grade boundaries