No worries! I followed the schedule to a tee with the first round and It all went really good, EC was always on point. As far as I’m aware your plants will only struggle to use those nutrients if one of your other limiting factors is not optimised. For example not enough light or the temperature and humidity not allowing the plant to thrive.
last grow I went all out and tried supplementing co2, I was running the nutrient at about 3.0 EC and never experienced any burn or stress from the plants.
Let me know if you have any other questions on this