Hi ive been reading through your Dairy and i have a medium sized problem with that 30kg (50% Vol.) Potting mix from a great organic grower nearby
10kg (20% Vol.) Vermi
(30% Vol.) Perlite
About 2kg of organic NPK nutrient granules
Myccorhizae granules - put this into the holes where the transplanted pottlings would be placed
its the knoking nothing....problem.. you are using a potting mix from an good organic grower thats nice... but why putting NPK granules inside it.. so you have no clue and no control of the intensity of your nutrients
Your Girls are in week 5 and are small.. and looking irrigated.
In my opinion it enough to take the organic potting soil, mix it with perlite, vermiculite and peatmoss.... little seedling like it very " poor" and you can control everything you feed them