Looks like you're "out of altitude and out of airspeed".
Your options would seem to be, one, do nothing or, two, super crop some of/all of the plants.
The do nothing approach will only pan out if the plants stop stretching. Given that they're at week five, that's most likely the case. Even if they do stop stretching, you'll have to either drop PPFD or allow more plants to grow into the light.
Super cropping? It's OK that they're growing toward the light. I think this is the better option. How far down the stem are you super cropping? I'd be tempted to make the bend at least 1' down.