You may want to try interacting more with the bunnies, such as petting them often or giving them treats. Spending more time with the bunnies in your phone contacts could also help.
That action is one of the special things a bunny will do when your bond is strong enough. You can raise your bond level by calling them from your contacts, giving them treats, and petting them lots.
Once you’ve gotten close enough, try moving your cursor (your hand) near them and see what happens. Hopefully you’ll get your chance before long!