Slowed down flowering stage?

From reading your diary. You have several things going on back to back that probably caused the pause in flowering. You topped your plants and the following week put them into flower. They were recovering from low temps and overwatering at the time. It can take up to 2 weeks to recover from a topping and 2 weeks to start to flower, not to mention how much to recover from neglect. I don’t think your light is the problem, or light leaks unless you keep lights on outside the tent 24/7 - if so turn them off. I’d say due to all surrounding circumstances your plant is probably struggling to get itself on track. Once it does, and I believe it has, you can start your flowering weeks - this would be week one.