When exactly to start flowering/bloom nutes on an auto?

I'm not that well versed on Autos and am running them because I was waiting on other photo seeds.

My SDD is starting to bud. Am I safe to start bloom nutes?

Also, should I slowly dial down the grow nutes and move in the bloom nutes? Or can I just start the bloom and discontinue the grow nutes because they are from the same company?

Thanks!

In my first successful auto grow I divided the projected lifespan into 3 parts. 1st part grow nutes,2nd part half grow half bloom,3rd was bloom nutes. I pulled 13.83 oz dried and cured from 3 sweet seeds cream mandarins in 3 gal smart pots.
Hope this helps
Polo

after the stretch is done the plant wont want nearly as much nitrogen so around then gauge by leaf color yellowing but otherwise normal fan leaves: more N, very dark green fan leaves: less or stop depending how far along the plant is, there will be some differences strain to strain in leaf color (and in how much N they want) but youre going for a nice green.

if it wants more phosphorus (red/purple petioles) and still some N do both assuming the N-P-K rating on the bottle is low or 0 in N. If there is some N in the bloom mix you probably dont need to worry about it much.