If your medium is coco then it needs to be watered more often and should not be allowed to dry out. Keep it moist.
Creating optimal conditions is how to correct this, the light, the watering, and the air flow should be as optimal as possible. Temp, RH, PH, light intensity and distance, air flow in root zone...they all should be as close to ALREADY TRIED AND TRUE METHODS which have been explained here on the forum over and over. Search the threads with a notebook in hand, write down exactly what needs to be done and then implement those tactics exactly as stated.
Lots of people will have differing opinions but youll see the same general information in multiple different threads, take the general consensus and use those tips.
The pot lift method will take time to gain that kind of experience. You can start to guage the weight but if youre relatively new to growing then you may not recognize the difference between fully watered and underwatered which is why im suggesting someone elses watering schedule, itll already be tried and true and work well.