i have studied at fiitjee south delhi & getting 253 in jee.i had a good preparation but couldnt do well.planning to repeat jee how shld i restart.

No one can help you in this decision....you have to take the decision yourself,,,,

i guess wasting a year is not a wise descision...wat u can do is u can get admission in the IIT colleges and show ur caliber there by being the batch topper or branch topper 

but ultimately the descision of repeating or not rests with u...