Not here. Hoping my new rotation idea will get them back on track.
When I took my pond down for renovation a few months ago, I had some WH that was just starting to grow and fill out. I might add that I rarely get blooms -- in fact, only twice that I can recall, but the plants usually do OK.
Anyway, I took all of my pond plants [marginals & submerged] out and placed them in temp. holding in a plastic kiddie pool [also had an air stone in there], along with as many tadpoles as I was able to rescue from the pond.
The kiddie pool gets maybe 4 hours of direct sunlight, but it's the best I could do. As for the WH, I doled those out into various containers, including putting some in the stock tank with the fish. Of all the locations with WH, I thought the kiddie pool was the worst idea as it was crowded and not very deep. Then, over time I ended up with an outdoor nursery tank for my fry, so put some WH in there, as well.
I might add, that every container -- except the ones containing fish -- got an initial dose of liquid fertilizer....
I noticed right away, almost within days, that the WH in the kiddie pool was starting to look awesome -- you could actually see the "green" filling in the leaves and they were becoming huge! The ones in open containers and totes [which actually got more sunlight] about died. The ones in the tank with the fish were pitiful, but I was restricting sunlight there in order to regulate the water temp.
So, I basically did what you are doing, and started rotating them. When any WH's started looking pitiful, they went into the kiddie pool. I have since discovered some fry that survived in the kiddie pool, so it no longer gets dosed with fertilizer. No idea why one environment succeeded, while another one didn't, but rotating the WH definitely helped.....