UpTo

UpTo[n] is a symbolic specification that represents up to n objects or positions. If n objects or positions are available, all are used. If fewer are available, only those available are used.

Examples

Take up to 5 elements:

Take[{1, 2, 3}, UpTo[5]]
(* {1, 2, 3} *)

Take up to 2 elements:

Take[{1, 2, 3, 4, 5}, UpTo[2]]
(* {1, 2} *)

Please visit the official Wolfram Language Reference for more details.