I don't get it

Okay, I didn't start watching Grey's Anatomy when it came out. I caught one episiode and thought it looked great so I wanted to watch them in order. I caught the first two episodes when I was in Yuba overnight for work. I rented the rest of season one on Netflix. I watched four episodes today (I stayed home from work). Season two doesn't come out until Sept. 12th but the first episode of Season Three starts on Sept 27th. What kind of time line is that? I would have to have all three of my Netflix's in and watch them right away to catch up on what is going on. I seriously think someone did not think out the time line here. Even if I purchased them, I would still have to watch ASAP. geez, give a girl with four kids a break, will ya?!