I do the same thing every day for my September trip..I NEVER see Storybook available...on my 180 days, I will go ahead and reserve a substitute dinner, in case Storybook never becomes available...but I will look every day, one million times until our trip..lol!
Last trip, we had several split reservations, for a party of 2 and 4 respectively. I drove myself practically insane trying to get a Trattoria Bon Voyage breakfast. During the week of, we had several to choose from for parties of 6. Within the week of, just about everything pops up as available. To make myself feel better, and for just general learning purposes, I go to the WDW website and look for reservations. I "pretend" I'm already at the park. Let's see what's available for breakfast/lunch/dinner tomorrow. The day after tomorrow, even the following week. You would be surprised what pops up. It's almost become a hobby of mine, lol. For ourselves, we have dropped 5:30 PM reservations for BOG twice now, the day before and day of. One time, we had to drop a 6:00 PM Akershus. I see Storybook all the time within a couple of weeks out. Sometimes people have to change their travel plans, sometimes they alter what park they're going to. I can't remember a trip where we didn't change at least 1 well planned day because we decided to do something else.
ETA: I just looked at tomorrow for dinner reservations, party of 6 and Storybook popped up for 6:05 and 8:35
For a party of 4, Akershus 5:10 & 8:00, BOG, 5:50 and 8:50 (Storybook available for same time as party of 6)
Party of 2, Akershus 8:50, Storybook 6:40, no BOG
Very fond of PPO breakfasts, practically everything open for party of 2 (even CRT) except Garden Grill
Everything for party of 4 including GG