Start of the 4th week.
I defoliated 2 plants out of 3. They look fine, still small but very bushy.
I had to water them already so I added some nutes, I'll probably do the same later this week, then slow down on nutes.
Also, raised the light, since I expect them to stretch a bit in the following weeks.
It's difficult to get to conclusion this early, and after one grow. But topping or lst seems to work nicely, even with quick autos.