No problem. I hope you can do it
. Let me advise you one more thing.
What i did was simple. Do a lot of mental calculus, solve riddles, pick random problems from your school book and solve it by a complete different way even if it costs you 4 hours, and look for random problems that are from subjects you didnt study them and try to do them. And , the fundamental, think about numbers. think and think about nonsense things and put sense on it, chose a 100% true fact that you know and try to create arguments to put it false etc... just work it baby xD