How do I withdraw myself from being a joint sponsor ?

If resident status has been granted you cannot withdraw as sponsor.

You may file for adjustment one year after obtaining approval of asylum

Yes each person seeking resident status requires an I-485 if filing within US.

Check the filing date on your receipt notice

Can I leave the country after my citizenship exam?

You may travel but be back for ceremony and answer questions on day of ceremony accurately.

Am I a Resident Alien or Non-Resident Alien for tax filing for the year 2017?

This is a question for a tax professional as Immigration status is not determining

What can I do to save my family?

Make an appointment with an immigration attorney.

I am serving probation under MCL 769.4a?

Likely to be considered conviction but a review is required as my colleagues have said.

I have a case pending with USCIS , my visa expired since December, can I travel internally with an expired visa?

Yes valid passport is all that is required. Recommend you also carry filing receipts

How long after the waiver of forgiveness is filed do I have to wait to get a response on my husbands case?

Hard to determine the processing time as cases are often taking longer than published