Yes, you can top or FIM now and for another week, maybe two. You can also do it a few weeks before flowering as well. The point of doing either of these techs is to increase the top (dominant) buds...topping should double the tops, FIMing can give multiple tops (2 to 6!) if done correctly.
TANKJR Reviewed by TANKJR on . A couple days into flowering a small plant. Can I top or fim her? She's a couple of weeks old, about a foot high and 3 days into flowering. What would topping or fimming her do now? would I be better of without doing anything? Rating: 5