-Try revising in a new setting - go to the local library, work somewhere else in the house - a change in setting can make a difference
-Revise with music
- Time-lapse yourself revising; it works, strangely...
-Try not to think about revision holistically - as in, break things down into small steps you need to accomplish. So, instead of thinking “I need to get an A* in chemistry” (and consequently stressing yourself out), think “I need to revise this practical today”
-Try to do small modules of revision of each subject in short blocks - around 40 mins - 1hr.
-One final important thing: for the subjects you’re doing, you MUST do past papers. You should learn the content first, but an integral part of your revision should be doing LOADS of past papers. I doubt you can get anywhere close to an A if you avoid exam questions; they are incredibly important. If you struggle doing them at home, again, try and find a new setting. You could, one day, plan to go to the library and do a past paper under timed conditions if it helps.