I think you could possibly mix some regular dirt on top of that happy frog.
I never used "soil mix" like these... but Im aware that it is nutrient rich and that it may even burn newly-born seedlings, which in fact need little nutrient at first instance.
I play on the organic side of the game. As I can, if shit gets real... and I have acess to nutes, I would purchase. BUT, I still would prefer to gather manure instead!
(As it costs me little...)
Also... I cant find these fox trio easily, and if I purchase online Im afraid that it could put them cops on my trail cos its trully obvious.
Im in Brazil and those nutes are imported and also are expensive.
I go organic cause there is way less calculation in order to achieve the proper mix.
Plus I have acess to dirt already, so all I gotta do is to build it right. Adding amendments
Saddly, perlite and vermiculite are "not found all around" and I simply am the sort or low-profile. I pay with cash, personally rather than online. So theres no trails.
My biggest challenge is to make a rich soild that doesnt turn our like mud.
I think one can never add too much bone meal, or cottonseed meal /castorbean meal.
Nowadays im just learning more and more recipes...
So I make a banana skin tea for some potassium (K).
I ran a banana "flower" tea, which I learnt just the other day, that has even Cal/Mag, and higher amounts od potash... and thats all free!
You simmer in low heat, even add a couple spoons of brown suggar. And strain PROPERLY. (So ants dont come to eat it!) Cool and feed! Liquid nute, home made withing 30 minutes.
Isnt that nice? Seriously!
And you get to eat fruit, so its healthy for you anf for yhe plants!
All I can tell is that its much more forgiving, the plants will show you if they need more nutrients.
The good side of the whole thing is that my planta are not STINKY.
I can bet you that if I fed it with powerfull badass nutes it would be the DANK! And I dont look for it.
Im actually stunning my girls. (Stressing a little, too trying to achieve rodelization) :-$
I think about the cannabis as any plant.
They need sun+water+soil.
The amount of sun, water and nutrients might even lock it growth. So we try to provide all thr primary and secondary macro nutrients... micronutrients are important just as much, but in the end, it tends to survive, no matter what.
So you take some care of it, it will grow more beautifully than it would, "abandoned", or with low maintenance.
Each successive grow teaches you a couple lessons. So worry you not!
As I see, youre good to go. And the whole thing is pretty much happening already.
Ill be watching your journal to learn with you, how to feed the trio nutes.
Do as the other chap said... start VEEERY EASY with that.
He said 1/4 strenght.
I would go 1/8.... 1/6...1/4... 1/3... 1/2.
If you exagerate, the plant may stunt, become "crispy" and you will want to kill yourself.
Once I fed a 4-6-6 foliar nute to my plants (not cannabis). I did like veeeery diluted and the result was good.
Then, I added like 1/2 dose... and a beautiful medicinal herb called "mastruz" or also "herva de santa maria", which is a natural medicine to kill worms. Died really bad! It suffered for months with stunted growth. And only now its collapsing to spider mites.
What I want to mean is that EVERY SPECIE is tolerant to nutes on its own way. And it happen to vary between cannabis strains as well.
I just dont want to see you sad.
In vegetative they need a lot of N, some good P and yeah significant amount of K. Specially cause K is who builds up its "vigour".
But you dont wanna screw your plants. Specially after you purchased your expensive nutes.
In other hand if you dont apply any nute and leave it be with happy frog mix, they might not turn the best dope on earth. But it wont die.
Less is more.
Im all the way afraid of killing my plants
Im sorry if I speak too much.

I just want you to achieve success!