Honestly, you should be on cruise control. Thumb eyeball, you would probably want to be more like 50% rh or so if you can get there. Vpd off can screw with nutrient usage too. I’d bet if you can get a little better there you’ll be in good shape.
Pushing 1200ppm you are probably good for at least 1 more straight watering. Let plants dry out from this watering and give them another solid watering to runoff again and test it.