In a word, NO. Just sufficient grey matter necessary.
The hardest the maths get is SIN COS TAN
Arithmetic, square roots, simple & quadratic equations. That is about it.
Physics : Boyle Law. Charles Law. Principles of moments. Probably all covered at GCSE/O/ standard grade/NAT5 level
The difficult aspect is getting back into LEARNING mode. Even a lay-off of 9 months takes a while to remove the “rust”.
Nothing particularly difficult : once described to me as “low grade, high volume” material.
If you are working full time, simply chip away at it.
If full time groundschool then classroom and 2-3 hours each night 5 days a week. Use the Saturday 9-5 to go back over the previous coursework. Sunday have a rest until the evening. Then say 1-2 hours?
Adopt this regime from day1 and the exams will be a “piece of old doddle” to quote Sandy Thomson. Sadly no longer with us. Groundschool supremo in 1980/90s