No, you can't. A "by doing X" condition can't be met if only some of the required actions are performed. The conditions for this [When Digivolving] effect require you to place the specified number of cards as digivolution cards.

No, you can't. A "by doing X" condition can't be met if only some of the required actions are performed. You must return the specified number of digivolution cards to the bottom of the deck for the conditions of this card's [All Turns] effect.