You'll be fine just give them nutes according to their needs. It's when you already have a nute def that's the problem as it will become more severe faster.
In addition, you should carefully take measurements for at least one run, till you know how and when the changes in the nutrient uptake with CO2 happen.
Yellowing plants late in flower are a good thing, you don't want them full of nitrogen anymore as it makes the smoke harsh. I try to get all of my girls pretty yellow by the time they're done for best results.