It's the Easter holidays and only six weeks until the GCSEs! This is an interesting blog by Christine Norledge on Third Space Learning on how to revise maths:
My tip is that maths has to be "done" not just read about, past papers, exam questions, etc.
Use YouTube videos, Corbett Maths or Maths Genie videos to remind yourself and then practice.
Just as importantly, take regular breaks, do things that you enjoy over the holidays and spend time with family and friends too! Its all about the balance!