I recommend that you try to discuss this with the DSO at the institution which issued the I-20

Can I defer my H1B??

It is a tricky situation. Highly advisable that you speak with an attorney before deciding to give up the H-1B

.....

You can contact USCIS to withdraw the petition / notify of fraudulent information being submitted. Be advised that this would have serious...

Generally you can extend beyond the 6 year max if you have an approved I-140, even if the I-140 is with a different employer from your current...

How long for EAD after biometrics?

EADs are taking 4 - 5 months currently

Can I be denied an entry in Usa for a traffic misdemeanor ?

A minor traffic violation should not bar an individual from traveling to the US

Generally 3 - 6 months, but processing times vary case to case and are subject to change

When can i apply naturlization since my misdemeanor has been expunged?

You can apply soon as you are eligible, i.e. once you have 5 years of PR under your belt, and meet the physical presence requirements. Consider...

Can i apply for green card while i am visiting USA in B1/B2 visa?

Yes this is a highly risky scenario. US Customs can deny entry of a B-1/B2 if they deem that you have immigrant intent. Consult with an attorney...

You would file a motion to change the venue, which will result in a processing delay, but it won't be possible to keep in NY if you are living in CT