Coco flower week one

Week 1 of flower update, some of my leaves are getting yellow tips on the new growth. Watering 4lts every other day, mills nutes @ ec 2.0, RH is between 50-60 temp 24c 600w hps is more than 800mm from the plant.
Let me know what you think. It’s mainly just new growth so i moved the light up a bit, but not sure if i could be overwatering. Thanks guys

Suggest cutting back on nitrogen. A bit. The tips and extreme leafiness.