2 weeks is probably a good estimate. Its hard to tell, how old is the plant about 55 days from seed? I would do a mild flush and water tell about 1/2 gallon of water runs out and then stop feeding. Being that you over fed with nitrogen " the soil had too much in it" you might see the plant fox tail if you flush but it will make the smoke smoother in the end. Your next grow if you cut your Ocean forest with the seed starter mix or light warrior I think it is called and do every thing you did this grow you should have a much better harvest because the only problem I can see is too much nitrogen. Other than that you did an awesome job. If you ever get to a point were a plant is over fed don't be afraid to flush the soil a little as soon as your sure it is over fed and not something else, give the plant a few days and continue with your normal feedings again. On a plant this size about 1/2 gallon of run off is usually enough water to flush out the problem.