Exactly, which is why I suggested a few other products that are not innoculants. Instead, they are intended as teas or top dressing or soil mix. The teas can be used through flowering without any harm.
The transplant may help just because I believe there's a bit of root rot involved. . Flowering plants don't like it, but would probably be better than not doing anything at all if the problem continues. This is more of a last resort measure.
If you go back and look at how the leaves were in the beginning. They were arching downward. Wilted plants due to being thirsty don't have swollen leaf veins and they droop down more like there's a hinge at the stem. I haven't seen that in any of his pictures yet. The droop is different between the two.
Of course whether or not to water can be easily determined with a $10 moisture meter. We have several and my wife uses them all the time. They take the guess work out of this.
Surfactants that contain
yucca are the best ones. I have a bottle of Sledge Hammer. It's marketed as a flushing agent but what its
yucca extract. Dish soap will work, but a natural product is better. Again, dish soap is better than nothing and only as a last resort.
I'd be listening to the moisture meter unless you find out that the soil in the bottom 3rd is drier than the top 2/3rds. If you're using fabric pots just poke a small hole with a screwdriver and measure in the bottom 3rd area. You'll know your answer and can respond accordingly. Yes, over dry at the bottom is a problem but I'll be surprised if its the problem you're having.