Help ! Is this an overwatering issue? I am growing in hp promix coco which is mostly peat and coco Was feeding everyday with water and

I grew in promox hp for a short while and it had pretty heavy peat and stayed wet for a while. I had overwatering issues for a bit and started waiting until I seen the fan leaves starting to umbrella then feed/water. I also ran into manganese issues usually starting about week 4-6 of veg. I had many I was watering once a week for a while but got more frequent as the grow went on. 6.2-6.3 to me is the high side and prefer 5.8-5.9 in Coco but do go up and down with it. Personally I'd let them dry out a little bit, add some mycorrhiza and cal-mag on next water. Also when you do water look for run off, it helps with build up which for me is a common issue in Coco.

We would need a bit more information in order to properly diagnose. What is the pH of the water or nutrient solution going in? What is the PPM of the runoff? How do you determine when to water - weight of pot or feeling medium?