Lambs Breath Autoflower

The plant is stretching and clearly flowering at this point, I think? Not sure the official indicator of change from veg to flower. I watered heavily with a shower head to bring last months top dressing all they way down into the root zone and plan to top dress again for the final time this week. The mix will be almost the same as week 4 but with a bit more phosphorus (1.9 tsp/gal media with seabird guano [0,11,0] vs 1.6 tsp/gal media in week 4) and a bit less nitrogen to promote flower production. Home made drip time has been increased as leaf surface area in increasing rapidly. Hope to calibrate to water with about 1/2 gallon of drip water every 2 days. Water is municipal source from tap and is naturally at pH 6.9ish and has not be adjusted.