My first indoor

With Coco you try to keep it simple. Your pot may be too big for that small of a plant. That being said, if the plant is that small, the root system won't be that big. Growing in Coco you have to fertigate at least once per day with small pots and at least 2x a day with 3+ gallon fabric pots.

https://www.cocoforcannabis.com/ this was my bible when i started on coco, it worked great. can really make u understand it, and get a great start from this. i hope it helps. my first run on coco is still going, but man, never had a great run like this. good luck buddy.

May still be recovering from topping... was that recent? bringing down humidity will increase transpiration... I bet the plant's uptake rate of water impacted by slow transpiration in high humidity. 40-60RH% would be better... if you control environment tightly, look into VPD - at various stages there is an optimal temp/RH%.... othwerwise, i control RH mainly as a preventative measure for microbial growth, regardless of "optimal"...

erm if its week 5 yeah shes going slow but its probably down to over watering best advice for you is let her dry out and then only water around the base of the plant dont saturate the whole medium you dont need run off at this stage :) anyway good training im sure youll be fine :) best of luck

Your ph is not set right for coco. Your ph for veg cycle is 5.5 to 6.0 with 5.8 being your best setting in veg. Right now your ph is set for flower time. 6.0 to 6.5 ph while your flowering in coco, with 6.2 to 6.3 your best setting.

You've a saturated enviroment with water, low your humidity levels at this point to 60% at night 50-55% with lights on. basically with that amount of humidity the roots don't develop at the speed they should do and wont absorb as much as they should.