Krisisanswered grow question 10 hours ago Most things I’ve researched say top at 5 nodes, or top after the first set of 5 finger leaves. Honestly who really knows anything for themselves unless they experiment and see what works for them.
What worked well over time for other people may not be best for your situation. If you have a small space to work with just consider that the plant will most likely double in size one it’s flowered and stretches. Obviously some don’t stretch that much, and some can do more.
If your vertical space is limited lst/ trellis might be something more to consider. You can keep them shorter that way.
Not that you shouldn’t top, just saying even if you do, training can keep things much shorter