My pineapple express..... When to top??????

My Pineapple Express are 17 days old. About 12 inches tall... When should I think about topping them???? Thanks for any info

I'd top it now. We actually I would have topped earlier but to late for that

Just topped one and will see how it looks in a couple of days.

10-12inches is a good place to top or FIM plants if you allow them another week or so to veg
before switching the lights. With a FIM especially you will have 2-4 well developing colas by the
time you go to flower.

BigSteve.