First of all you don't want to remove the clone from the medium (soil for you) while the roots are developing. Roots are light sensative and don't like to be removed from their home while roots are developing. You are looking at another 1-2 weeks before that clone drops enough roots, provided you STOP taking it out of the dirt. If you are gonna feed, make it gentle as fuck.
I put my clones in 2 inch square pots, then transplant when I see visible white roots at the bottom in the drain holes.