Ethos Cherry Gar See Ya and End Game

Tracie67 Started a couple Ethos Cherry Gar See Ya in my new 3x3 AC Infinity tent. Also using the AC Infinity fan and carbon filter; all automated and on an app so I just have to look at my phone to ensure that the temp and rh is good. These babies are definitely growing slower than my last one. If anyone can give me tips on watering in a solo cup, I'd really appreciate it. I'm not one to over water so should I let them totally dry out before watering? Also, would watering them approx. 10ml ea. be enough every few days? This is the toughest part for me.