I only run in rich organics, where i add no additional microbes ever. I nurture the microherd.
Even with the worm castings added, your medium is far from the organic foundation necessary.
If i were you i wouldnt have added the worm castings, would use a salt based feed on that inert medium, or go a full organic route and build a proper soil if you dont like re-amending, and focus on the microherd with compost teas and or organic nutes such as biobizz. I grow in re-amended FF soils that have been re-amended over and over, since 2019, so 4 year old soil, and zero pH issues ever.
But that's just me. Its either or, but not this blended approach. Its just too easy to stress plants this way...