Hi Ishaan,
I must agree with InTheAir.
When you feel guilty thinking about possibly clipping the bird's wings, that is your own mind confirming that deep down, you know clipping will not stop biting. Clipping is not the only option left; it is simply not an option at all. If anything, clipping to prevent biting could be seen merely as punishment for biting that has already happened. Birds do not understand punishment.
I believe you are correct, that clipping will make the process of building confidence and trust more difficult.
BUT! I have some really very good news for you! Your bird will take food from your hand! I believe this is the single most important tool you could have for taming that bird. Over time, you will ask your bird to accept certain behaviours from you in order to gain the treat from your hand. As long as you present your behaviours in small, acceptable increments, and your treat is desireable enough, the bird will agree to accept you.
Someone else is working on this right now, too. Please follow these threads:
Ziggysmom/Stephanie has a bird who is afraid to come out of the cage and bites.
http://www.indianringneck.com/forum/vie ... =7&t=17504
Doodlebug/Loo has a bird who is not tame but has just started taking food from the hand.
http://www.indianringneck.com/forum/vie ... =2&t=17479
deHens/Jack has a bird who will climb on him, but bites.
http://www.indianringneck.com/forum/vie ... =2&t=17497
Please do not feel that you have no options anymore. This could not be farther from the truth! You simply need a little education and guidance, patience, and time.
Take heart!
-MissK