Mimosa evo rdwc

Once again had no issues had very good growth on all my plants, mother plant seems to use about 12/15l of water every 4 days just have to keep on top of that. Topping I did couple of weeks ago went a bit side ways as some plants seem to have 3 nodes at the top some how, Think is will be the last week in veg going to change light times next week to start flower, What would people’s views be on defoliation on the before flower should I do it now while there in veg or when I change the light cycle