There’s no such thing as too early but there is too late.
Exactly. I didn’t temp mine while it was cooking but it was warm and you could smell it going through a heat. All that organic fert mixed with lots of worm castings definitely gets hot enough to need to sit for a minute.
If it's outside and getting rained on you're leaching nutrients, N and K and Na would be the firsts to go. If it's covered and dries out the microbes will die/go dormant and you lose nutrient cycling. You'll want to rewet and give some more nutrients to the soil to get the microbes active again prior to planting. That could be as simple as a few handfuls of organic alfalfa meal mixed in or watering with a diluted molasses solution.