You should try to give equal importance to each of the sections. Try practicing quant for 1-1.5 hrs daily. For vocab and grammar practice half an hr for vocab as it is a bit boring (at least for me it is) and grammar for half an hr. LR, practice it again for 1-1.5 hrs. Try to finish half a topic daily in quant and one in grammar. As far as LR is concerned, it's upto you as mental capacity of taking problems varies person to person.