When to add cyco ryzofuel

Hey guys new to the growing seen, have 3 12 day old girls trucking along (15 days since they sprouted 12 days in a pot) there in Canna Terra Pro soil and it dose say to wait close to a month before adding any nutrients in. So im wondering if I should add in the cyco ryzofuel now or later on down the track. The girls are looking great but i will admit im not sure if its just me or the strain (Nitro Lemon Haze) from MSNL but there is the slightest of yellowing/lime green in the center of new growth and the vains in the center of the leaf are a little darker.

If anyone can help out it would be much appreciated thanks guys

no, add nothing to the soil except water and continue to follow directions, thats what I'd do.
then I'd lightly foliar feed a grow formula and not tell anyone

Haha thanks man i didnt think i should put stuff in yet but injust wanted to confirm with some others who know.