Give them more darkness and about 12 hours of light or a little more or less and they will definatetly show sooner or later. You can probably give them 15 hours of darkness each time you switch off the lights for sooner signing. Worked like a charm for me on both plants. They went right into flowering as light schedule changed. You can also give them a fert that is high in the second number.. p? It allows the plant to bloom faster or something.. Bah.