Re-use soil to grow autoflower

I have some old soil, which was used to grow flower using organic nutrients. My question is, can I re-use that old organic soil to grow autoflowers but use general hydroponic nutrients trio. I'm not sure if it's ok and I don't want to waste time

Sure.. i have..

I've been using the same 20 gallons of soil for around 6 years now. Some grows it gets amended, other times I just run Jack's nutes.

When u do amend soil , end up using less bottles in veg …

Go for it. Just don’t over for it with the bottled feed