Yes, it is possible to put the bebes in stasis with a method posted in a previous thread.
https://www.rollitup.org/t/can-i-freeze-a-clone-stem-to-plant-later.760/
It's usually ok to start feeding after she sports her second set of true leaves, the leaves after the first seedling cotyledons. Start by giving it nutrients at 50% of the recommended vegetative dose for week 1.