I top before the 4th node, my plants usually take an extra week or two to get started and i top them while they are in struggle mode, seems to help them catch their ballance.
maybe you'd like what autoflower portal is doing.
https://autoflower-portal.net/
I got some of their breeders packs they were releasing monthly and they included some mephisto crosses in regular so you can make your own seeds relatively easily, though the natural process.
Cheff anna has a...
I've grown the northern auto and grizzly purple auto, mango (photo). Everything has been fire. I really want to run some more of their northern auto but i have too many seeds, waiting to trade someone for a couple.
Looks like its going to flower pretty soon, let it grow as much as it can. I like a little extra stretch / preflower veg time, bump the yield up hopefully.