The usual method of paying child support is by income withholding. There's nothing wrong with paying in advance, but let the custodial parent know what you're doing and DO NOT send the payments to her - make your payments by check to the State Disbursement Unit or to the courts.
Not possible if you don't have one.
NO!
That should be possible.
You must return to court to have the order modified as soon as possible. Until the child support order is modified you may be incurring arrearages.
yes
no
no
no
Yes
no
Yes, it can. Moving in with the other parent is grounds for "flipping" child support payments. However, this must be done by court order.
Usually, yes; however, some parents with joint custody pay support.