no
The father has to have the court's consent to cease paying child support.
Paying child support will not cause the father to lose his parental rights - neither will not paying child support.
Yes, see link
what do I do if my child's father is no where to be found what do I do if my child's father is no where to be found
If you are the child's father then you really have little legal support to not support your child. Your child is legally entitled to your financial support.
A father cannot petition for emancipation, the child has to. And it doesn't relieve him of paying back support payments.
Yes.
No.
At 18, you are no longer considered a child for child support purposes unless you have not graduated high school or are disabled. If the child is 18 and out of high school, you must contact the Texas AG to stop child support.
If he has a visitation order, yes.
Yes.Yes.Yes.Yes.
Possibly. He must return to the court that issued the child support order and request a modification due to a change in circumstances. It is up to the court whether the child support order will be modified. He should act ASAP.