before you switch nutes, you might want to flush.

(if you have a 5 gallon pot, flush with about 5 gallons. I move mine to the shower. final gallon is dosed with H202)

Its one of those things that when done right, especially with H202 added (hyd peroxide) it's almost never wrong.

even in overwatered plants, a flush, or at least water with H202, and it will get oxygen to the roots and tide them over until the medium dries out.