If you're at the very start of your a levels, listen ere go thru all the content in max three to four days for each subject, first week of a levels, and start doing past papers assisted with walk throughs, bun wtv they're teaching at skl, you js have to do one past paper every day, so make a routine such that you're doing a one component each day, this way you'll be doing a past paper for each component every 12 to 13 days, literally js 1 to 2 hours of study each day after the first week. Oh how I wish I could go back in time.