How to get an 'a' at as level chemistry and biology ?!

Hi this is the account holders younger brother. Next year I will be studying both as level chemistry, biology, maths and history. I really want to do medicine ane am hoping to receive 2 A's in Chem, biol and 2 b's in as history and maths. I really want to receiver 2 As in Chem and Biology as these are two subjects I am genuinely interested in and really want to do well in. I'm hoping for a b in as maths as I know that maths is not my stronger subject although I need it for med, but is it wise to think that if I get my As in Chem and biol I would feel less pressure in A2 to push up my grades and just maintain whilst with maths is happily then be able to work really hard to maintain the b or get the A ( I will be dropping history hence am aiming for a b as I won't be carrying it on and don't want to focus all my energy into history)

Now to the main Q, HOW DO YOU GET AN A IN ASLEVEL CHEMISTRY AND BIOLOGY?! I know there's a lot more subject content in a levels and everyone says make notes and do past papers ( what I do anyway) but there surely must be something else that gives the A because all of my sisters who are very intelligent and now pharmacists worked so hard during a levels making notes and past papers etc yet got Bs only a couple of mark short the A. Please leave genuine answers and thanks in advance !

Hi this is the account holders younger brother. Next year I will be studying both as level chemistry, biology, maths and history. I really want to do medicine ane am hoping to receive 2 A's in Chem, biol and 2 b's in as history and maths. I really want to receiver 2 As in Chem and Biology as these are two subjects I am genuinely interested in and really want to do well in. I'm hoping for a b in as maths as I know that maths is not my stronger subject although I need it for med, but is it wise to think that if I get my As in Chem and biol I would feel less pressure in A2 to push up my grades and just maintain whilst with maths is happily then be able to work really hard to maintain the b or get the A ( I will be dropping history hence am aiming for a b as I won't be carrying it on and don't want to focus all my energy into history)

Now to the main Q, HOW DO YOU GET AN A IN ASLEVEL CHEMISTRY AND BIOLOGY?! I know there's a lot more subject content in a levels and everyone says make notes and do past papers ( what I do anyway) but there surely must be something else that gives the A because all of my sisters who are very intelligent and now pharmacists worked so hard during a levels making notes and past papers etc yet got Bs only a couple of mark short the A. Please leave genuine answers and thanks in advance !

You mention less pressure in A2 if you get high AS grades but don't forget that A LEVELS HAVE CHANGED. AS DOES NOT COUNT TOWARDS A2 AND THE GRADES THAT COUNT WILL ALL BE AFTER THE 2 YEARS - NO POINTS FROM FIRST YEAR CARRYING OVER!