(a) If notice of a hearing on any petition is required and except for specific notice requirements as otherwise provided, the petitioner shall cause notice of the time and place of hearing of any petition to be given to any interested person or the person's attorney if the person has appeared by attorney or requested that notice be sent to the attorney. Notice shall be given
(1) by mailing a copy of the notice at least 14 days before the time set for the hearing by certified, registered, or ordinary first-class mail addressed to the person being notified at the post office address given in the person's demand for notice, if any, or at the person's office or place of residence, if known;
(2) by delivering a copy thereof to the person being notified personally at least 14 days before the time set for the hearing; or
(3) if the address or identity of any person is not known and cannot be ascertained with reasonable diligence, by publishing at least once a week for three consecutive weeks, a copy of the notice in a newspaper having general circulation in the judicial district where the hearing is to be held, the last publication of which is to be at least 10 days before the time set for the hearing.
(b) The court for good cause shown may provide for a different method or time of giving notice for any hearing.
(c) Proof of the giving of notice shall be made on or before the hearing and filed in the proceeding.