When to switch to flower nutes

You’re smart to be thinking not to run N long into flower. But it seems most agree with autos there’s a bit longer transition into flower and you should run decent amount of N until you’ve got clusters of stigmas/pistils. I’m not familiar with the nutes you’re running but when I’d do autos I’d do kinda a half and half mix between veg and bloom nutes the first 2-3 weeks of flower then after that go straight flower nutes.