hi mate,
you cant clone colas. unfortunatly.
though you have nothing to lose trying to clone the plant. but some people say its harder while in flowering.
how long into flowering is it?
best thing to do is check the grow faq and see how cloning is done and take some cuttings. you'll need some sort of root hormone.
Then harvest watever bud is on the plant. Its all a learning curve, And dont stress over it man,
At least you'll get some smoke from it, and you'll know what to watch out for next time
peace