heyy!
I'm also in year 10, and have my mocks after Easter (which I havn't started revising for yet...
)
I've literally been procrastinating sm omg, but rn my plan is to re-learn the stuff from yr 9 bc I've forgotten it all, then I'll probs do loads of past questions, then make/do flashcards.
advice: idk can't rlly give any as i'm in the same position as you
useful resources:seneca, cognito, yt videos, revsion guide (if u have one!!)
physicsandmathstutor, mmerevise, revisionworld (have a range of resources e.g. past papers, questions on specific topics, mmerevise also has worksheets i'm pretty sure, and loads more!)
for maths specifically: mathsgenie, corbettmaths, drfrost (if your school has given you a login), firstclassmaths, any any of the other websites listed above.
but yh, overall ppl have just told me to do loads of past paper question, as their likely to re-use questions just with a different wording or smth.