I have two autos that are about 9 weeks old. One started flowering about week 4 but the other one has never flowered. I had them on 24/0 for the first three weeks then I switched to 20/4 for the rest of the grow. It seems to be vegging nicely, and it has a handful of single female pistils scattered around its branches, but it never took off flowering. Being an autoflower seed, does it have a limited lifespan? Can I leave it vegging for 3+ months and then try flipping the lights to 12/12 and see if it flowers, or is there a chance that it will be genetically defective and hermie or just die of old age before it can go through the flowering period?