Is this your Bruce Banner? That strain is notoriously late in getting to flower as an autoflower but I would say you're within a week of being there... And yes, you need a LOT more light for her than 25W! At minimum I would say 100W ... give her as much light as possible! She will really start to stretch and get much taller as soon as she goes into bloom so don't worry... keep the lights about 15" from the plant to encourage that stretch and you can start to add your bloom nutes now..
Good luck!