If your not seeing deficiencies....then don't give them more.
I would keep them at 1200 until the last two weeks. Then drastically cut it back. Like 800 and then 300
Well, with the plants I'm running. I NEVER go above 900 in veg. Never above 800 really. I run veg nutes at 900 the week after the flip. Then the second week is around 1000 with flower nutes. I max out around 1200-1300 in weeks 4.5-6. Then I cut things way back.
One thing I believe is that too many people switch to flower nutrients too soon. The notion that nutrient levels in the soil trigger flowering is bullshit. What happens in nature? Suddenly all the nitrogen is gone? For the first week or two there is an explosion of growth, not flowers. That explosion needs nitrogen to happen.
I typically just use my veg nutes for the first week, then top off with flower nutes the second week.
I run phosphoload at about week 2.5 which means I add it to half strength nutes, let it run 24hrs and then dump it all. So I don't like mixing all fresh nutes in the beginning of week 2.
Confused enough? Lol