What was his final miracle of healing before died and rose again?
The last person Jesus helped before he was crucified was Malchus, a servant of the high priest.
Peter cut off his ear and Jesus restored it.
Luke 22:49 When they which were about him saw what would follow, they said unto him, Lord, shall we smite with the sword? 50 And one of them smote the servant of the high priest, and cut off his right ear. 51 And Jesus answered and said, Suffer ye thus far. And he touched his ear, and healed him.
John 18:10 Then Simon Peter having a sword drew it, and smote the high priest’s servant, and cut off his right ear. The servant’s name was Malchus.
I hope you find this helpful.