Changing from veg to flowering nutes.

I'm just in my second week of light flip, can already determine sex both female "fem seeds". Currently using Botanicare CNS17. I here some say not to switch until buds form or plant stops growing. Thoughts on switching to flower nutes with Mighty growth enhancer your thoughts will be appreciated.

When your plants have finished the stretch then swap nutes. It's that simple. They will grow rapidly. When that stops they will need more potassium so you switch nutes