Soil too hot?

Making my own soil for the first time and I think Ive messed up.

I bought a bag of biobizz all mix for my main base and light mix to start my seedlings in.
Used the whole 20l of all mix and half the 20l of light mix for base, then added around 4l worm castings and 500g ecothrive life cycle. Followed by microbes.
Now doing some research ive seen that lots of people seem to have problems with all mix alone burning their plants.
Im disheartened because my soil is almost certainly way too hot.

What should I do?
Im thinking buy another light mix 20l and add that, but idk if that will even be enough to bring it down. Im also thinking I could add coco?

See what you have. Mix a cup of soil with some distilled water and run it thru a coffee filter then check ec and ppm in the water.

Truly you should probably let the soil cook a while before using it, but you could stick a plant in it, any type of plant, then see what happens.

Why does all of this have to be so complicated?.. start with a base mix like Sunshine #4, and add your amendments accordingly. Clean slate, you know what's in it. You're not going to start seedlings or clones in a hot mix anyways.

Here's a basic schedule.
Start you seedlings in a base (no amendments) and just keep a 2 sq inch area moist with plain water till it pops the top of the soil. Keep feeding plain water till the first set of leafs form. Going from GH Trio... add 2.5ml per gallon for the 3 ... Micro, Grow and Bloom in that order. Keep moist, but not saturated in a solo cup. As they add on nodes, up the dosage per the schedule below, and then transplant into your final pot (5-7 gallon) Follow the schedule with a plain ph'd water flush every 3-4 weeks to avoid salt built up and PH lock out. Easy.

Clones... start them out with the 2.5 ml feeding from transplant, and then follow the the same schedule with a 20% run off every time you feed to avoid salt build up. If I can make almost 2.4 lbs. from one plant with this method, you can too. It just takes a bit more veg time, and longer flower... but
it's worth it..... keep it simple. If you're going to extend your veg time to say 6 or 8 weeks.. just keep the same week four feeding till transition. Same with end of flower... nobody finishes in 8 weeks flower I promise you. ....and ignore the flush.. Flushing is dumb. Feed till chop. Flushing is only for salt buildup from not feeding till 20% runoff. If you do this, you won't have any problems. Keep your PH in check.