Tristan Thompsonis now officially in charge of his little brother. Documents obtained by RadarOnline.comshowed a judge appointed the NBA star, who’s already a dad of four, permanent guardian of his 17-year-old brother, Amari. Tristan is now in charge of Amari’s medical decisions, finances, and more. “The Petition – Appoint Guardian of P&E (Initial) filed on 9/8/2023 by Petitioner(s) Tristan Thompson is granted. Tristan Thompson is/are appointed as Guardian of the Estate of Amari Douglas Thompson,” the document filed in Los Angeles court on Monday read. This comes five months after Tristan was …