They look super healthy I wouldn’t change a thing. Leave everything where you got it and take it a week at a time. Could be two or four weeks but they still are still working and don’t look overfed so wouldn’t worry about nutrient toxicity. If you are in a rush you could wait a week and then cut out nutrients and watch her eat herself for two weeks. But I’d say your are closer to 3-3.5 weeks than you are two.
Just one growers opinion though. You’ll have to make a final decision based upon how you feel about what you are seeing on your end, but from here she looks like she’s still working. When I see less than 5% of the plant fresh white pistils I assume they are done spreading out and ready to work on swelling and hardening. That’s my two week trigger for just plain water feeds.