If she's got a few weeks left in her I'd start the nutes again. Give 1/2 dose, see how she reacts. A couple of days later give her the other half.

Make sure you are getting water all the way to the lower roots. This late in flower you don't really want to underwater, but avoid overwatering, too. If the pot feels much lighter than it really should, she needs water soon.

Letting her fill-in is likely a good idea. Watch her reaction to the first dose of nutes, and if no improvement you can fill-out the troubleshooting form and we'll dig a little deeper.

Usually I flush 3 days before harvest, plain ph'd water from then till harvest.