Yes exactly, and that's fine and necessary because you went too big from jump street. I regularly go a week or more between waterings early on. My oldest girls are currently a bit more month and I think I've watered 3 times, I'd have to check my notes. Weed likes a dry period, if the roots stay wet all the time, they basically suffocate/drown because there is no oxygen available, they get thier oxygen via thier roots, and if you deprive them of oxygen they cannot carry out any other processes effectively and they suffer in a variety of ways. Read that link and you will gain the knowledge you seek lol. Only 20 mil every 2 days is keeping them in a constant wet state because they have a small root zone right now, and they will suffer root growth issues as well because roots will not grow into dry soil. You want your roots to venture out so you have a nice robust root system.