At any time after the inquisition, the person ascertained to be incapacitated, by himself or herself or by next friend, may apply in writing to the court of probate for a revocation of the proceedings against him or her and of the letters of guardianship or conservatorship, the application to be accompanied by the certificate in writing of two physicians or of two other competent persons stating that, after examination of such person, they believe the person's incapacity has terminated.