Legal Question in Business Law in Texas

I'm not quite sure what you are asking. Do you want your son to give you these powers or do you want to give your son these powers over you. Either way, the party granting the power to someone else has to be mentally capable of knowing what they are doing and the party receiving the power has to know what obligations they are undertaking. You should use an attorney in order to make sure it is done right, but that is your choice. If a party is not mentally capable of granting the power, you will need to go to court.