Intuition

[KobeBryan]

can you only choose 1 or 2 cards instead of three?

what if i only have 2 cards in my library

[Bobmans]

can you only choose 1 or 2 cards instead of three?

what if i only have 2 cards in my library

No, you have to find 3 cards unless you can't. The oracle wording of the card does not say "you may" or "up to".

701.15d. If a player is searching a hidden zone simply for a quantity of cards, such as "a card" or "three cards," that player must find that many cards (or as many as possible, if the zone doesn't contain enough cards).

609.3. If an effect attempts to do something impossible, it does only as much as possible.