Can I file a violation of an Order of Protection in Family Court?

You could, but do you want to? .........

Can I file for custody while I am married and living with my husband

Yes you can. It happens from time to time.

Grandparents have rights in NY, but they are very very limited.

How do I petition my spouse for support if I have to information on him?

If you don't have information it will be difficult. Be upfront with him.

My ex-wife wants an upward modification on childcare. Would the court also review my basic support in the process?

Possibly. Depending on what is requested, and if it is proper. Please speak with counsel to discuss.

Can I leave the state legally with my son?

Call the police. File a motion with the court. Speak to an attorney.

My husband isn't letting me see my son, can he do that?

You might need to file a petition with a court to enshrine visitation. Please speak to an attorney.

You are fine. As long as each child has their own bed. People without means for more are allowed to keep custody of their kids.

I relocated from NY to FL with 10 yr daughter but after 1 yr, due to health reasons, I decided to return to NY.

Are you able to relocate from state to State? You might need judicial permission. Please speak with counsel.

Is dropping my parenting time my best option right now?

If you drop your time, it may be hard to ever get that time back again. You will still be on the hook for child support.