Use “id.” for the note above

Style note²Law reviews21st and 22nd editions

A periodical cited again in the only authority of the footnote right before it is repeated with “id.”; “supra” is for a citation standing further back.¹

1. 1R. 16.9(a) Id. Tables: R. 4.1 “Id.”; R. 4.2(a) “Supra.”.
2. 2A style note: the rule in note 1 allows both forms and prefers one.