Hi Verpa,
Its natural. So chill
Identify those areas where you are loosing your score. After every exam devote atleast 1 hr to carefully analyse your mistakes(the focus from now one should be on quality not on quantity). Take every mistake and compare what were you thinking with what you were supposed to
. This takes you to the root cause.
In my case root cause varied from being lazy to confused to lack of my knowledge for secondary meaning of words. Then sit and prioritise on what you want to work (choose that one weakness if fixed will make a mammoth change to your score). In my case again, it was to maintain focus. So i went on doing almost 5 tests every day just to discipline my mind and looks at options very closely.
Hope that helps.