IN 1 MONTH YOU CAN SCORE MORE THAN 90%.
Then why you are just thinking about 75%😕
In morning you can do maths, as in this period our brain works 40% more smartly then Usual period. In noon physics and in evening chemistry.
Pick up the tough chapters first which carry high weightage in boards, AS THIS WILL BE STRESS FREE IN LAST DAYS OF PREPARATION.
Then do the easy chapters which will give confidence.
If some days are left for boards do a high quality of revision of tough chapters of pcm, as easy chapters can be easily memories anytime you want.
DO PAST PAPERS FROM 2013 mar TO 2019 July.