How to revoke a sponsorship?

The I -134 you signed is actually not enforceable although these days that doesn’t mean DHS wouldn’t try At any rate, it would not be a good...

You can change status but you cannot attend school until it is approved which should take more than six months.

If the H-1 was denied on specialty occupation issue, you need a better lawyer to file a Motion to Reconsider immediately. CIS is completely wrong...

194 valid but still am i in legal status

If the H-1 was denied due to the "specialty occupation" or "Level 1 wage" issues then it is very likely your attorney did not address the issues...

Canadians do not need L visas; you are admitted at the airport in L status. Doesn't your attorney know this?

What would be the status when requested date is different from Valid from date for I539?

She was technically out of status for nine months or so, but she did not accrue any unlawful presence.

Is it possible for my PR father to be added to the same petition my USC mother already filed for me 4 years ago?

Unfortunately, you cannot do that. Your father would have to file a new petition with a new priority date.

Can I start my work after getting USCIS confirmation of H1B approval ?

No, you cannot. That would be a violation of your status and an I-9 violation for the employer.

AOS EB2 to EB3 with approved I-140 now changed my mind and opted to do EB3 consular processing?

You have at least one immigration attorney representing you, if not two. AVVO is for people who might need an attorney, not for those who already...

I am here on GC and my wife lives in Pakistan. What are the chances of getting spouse visa when she denied for F1 twice already

The consulate cannot deny an immigration visa like they can deny a nonimmigrant visa such as an F-1. You need to file the I-130 petition for her...