Spend a few days review all the concepts and points to note when
solving the questions. Having concept will help you remember the
formulae and steps better.
After which practice through the mathematical simplifications,
like solving using partial fractions, butterfly method, general
quadratic formula, complete square.
Then do TYS. Do that time if you hesitate of do wrong, use
pencil to circle the part where u encounter difficulty, learn how
to overcome it, maybe concept not strong or maths not strong.
Don't forget, u got many other subjects. The moment before u
sleep don't think of pretty girls or girlfriend, think of the
concepts and wad u did to solve the problem. Think of the parts
where u encounter difficulty in solving.
If you dream about it, it will be even better. Next day u will
remember very clearly.