how long to flowering?

I have my plant on 18 hours of ight its 2 monthes olg how ong should i wait to switch to flowering...?

A pic of the plant would help, it depends on the size. You can switch to flowering whenever you want, the longer you wait the more of a foundation for buds to be built on= more weed.

2 months old its ready or it should be.

I would put her into flowering now.. Its ready i did mine at one month..