hey frds . iam a an iitjee aspirant. currently i am in class xi. i want  to crack iitjee in 2012. how many hrs per day should i study ? also when i solve maths i get caught up in many problems and can't solve many problems. after trying it for around 2-3 mins i give it up and look for the solutions. is it normal??? should i discontinue this practice???

is it normal to have problems in beginning that get sorted out afterwards??