I agree with earthnut.
I’ve used weed control fabric, plastic sheeting and tarps over the years to kill off grass in areas I want to grow vegies in. Never had any issues, even in areas where I’ve left it place for a full year. Under plastic and tarps the soil does dry out over time, at least where I live. When I uncover it, I either water it thoroughly then cover with mulch and plant it out or I mulch it and wait for good rain before planting.
A way to be confident that life is returning is to add a bit of good homemade compost around each plant or on top of each seed.
