Topping my Autos

FIRST of all, you don't have 4 nodes, you don't have a full 3 nodes yet.... but beyond that, I presume you've grown this strain before and know when it will go into pre-flower? If that's affirmative, you can TRY to top when she's a week away from going into pre-flower - that ought to give her enough time to recover (maybe)... if you miss the mark, you'll end up not getting any harvest out of her at all... Stick to LST when you're growing autoflowers unless you know precisely what their timing is because you can't change their internal clock....

way too soon btw where did you see 5 nodes? I can only see 2 and 3rd is not ready yet