What to do when biological Father is sick, cannot work and doesn't pay child support?

I think your question is more about whether there are public benefits and Social Security for children of disabled person available to you, than...

You do not state whether there was a partnership agreement nor life insurance for your father involved, nor whether he was married or had minor...

What do i need to include when I file a motion for relief from a standing temporary order granted for grandparent visitation?

If the Clerk will permit you to move the hearing to an earlier date then do so and re-notice the other side of the changed date for the hearing.

What are my options to deal with this caregiver who has taken all my great grandfather's money after he passed?

You should meet with a Probate attorney right away and you may be able to recoup from the caregiver potentially.

Is there a way to get a new death certificate having my uncle's full name? (Without abbreviations)

Are you trying to probate your uncle's estate? Or are you trying to correct the death certificate?It is unclear what your goal is from the phrasing...

Are there any docs I can file to prevent any further grandparent visits that have been temp ordered by Middlesex Probate Court?

Were you notified of the hearing seeking the temporary order of visitation? If not, then you should file a Motion to Vacate the Order on the basis...

I think you are looking at a Contempt Complaint which addresses the nonpayment of child support issue and a Modifcation of Custody/Visitation...

Child Custody Trial...

The Court will potentially penalize you for not reviewing evidence with the opponent. The laws and rules of procedure and evidence still apply to a...

The Court unfortunately doe not view property issues as being emergencies and views threats to safety and well being as emergencies. That said, if...

You will need to bring your separation agreement and all modifications with you to a divorce attorney to examine and have your financial...