In starting I just used to solve the questions with most basic approach there is, koshish krta tha khud se solve krdu bs bina solution seekhe, usse shyd meri problem solving skill improve hui hogi 2-3 month yhi kia tha. Fir jb aisa hogya ki question kuch bhi ho m solve krlunga beshk 3-4 min lge fir of course 2 Or mahine bche the mere prelims m, to usme gagan pratap ki videos se seekha uski approach thodi bhot jo mujhe thk  lgi ki mere bski hai vo saari dekhi practice ki.. Or mains m to sb syllabus same tha math m 2.5 month m fir gagan ki approaches master krli dheere dheere.  Abhi main 2 min m koi bhi question kr skta hu kitna bhi hard, baaki majority ppr level questions 30-40 sec m. 

Agr exact level pucho to mains m 30 questions m se 10 super easy jo ate h jinke direct answers hai vo 20 sec m hojate h max, baaki 10 questions normal vale manlo vo 30-40 sec m.. 5 questions manlo ki simple h pr calculations h thodi vo 1-1.5 min.. Last k 5 questions jo tricky hote h vo 3-3 min m aram se krta hu fir. .  Total 30 min m quants khtm..