Hello Akshay !!

If you are not really satisfied with your colleges that you are getting now and you are very confident that you could do better in your second chance, then you can go for drop. And, the institution you study matters the most.

Good education in low cost can only be done by choosing online platforms like Physics Wallah etc..,

If you want offline coaching you must join IIT campus of Sri Chaitanya or Narayana Junior Colleges. It may sound weird. You may even have done your intermediate here. But, if you focus on only studies without any distractions these are best. Your cost of studying will also be less comparing with big institutions like Allen, Resonance etc..,

Many people think that those are equivalent to jail and food is so bad. But, if you want to actually be an IITian with less cost you must adjust there . If you give your best and follow the tips given by them it is enough.

All the very best.