In order that the ancient established practice of the Sacrament of Orders in the Eastern Churches may flourish again, this Sacred Council ardently desires that the office of the permanent diaconate should, where it has fallen into disuse, be restored.(Cfr. Syn. Nicaena I, can. 18; Syn. Neocaesarien., an. 314/ 325, can. 12; Syn. Sardicen., an. 343, can. 8; S. Leo M., Litt. Omnium quidem, 13 ian. 444; Syn. Chalcedonen., can. 6; Syn. Constantinopolitana IV, can. 23, 26; etc.) The legislative authorities of each individual church should decide about the subdiaconate and the minor orders and the rights and obligations that attach to them.(Subdiaconatus consideratur apud Ecclesias Orientales plures Ordo minor, sed Motu proprio Pii XII, Cleri sanctitati, ei praescribuntur obligationes Ordinum maiorum. Canon proponit ut redeatur ad disciplinam antiquam singularum Ecclesiarum quoad obligationes subdiaconorum, in derogationem iuris communis Cleri sanctitati.)
You may remember that the Roman Church indeed did away with minor orders a few years after Vatican II.