Simply put, yes. When are you going? If you are within the 180 days, keep stalking those reservations because things do move around, especially at the 60 day mark and within 30 days. Good luck!
@disneygirl76 is right. If the reason the question is being asked is that OP tried to get a reservation but couldn't I also recommend continuing to try. Case in point, on my trip last month I cancelled a BOG breakfast reservation the night before because we decided we didn't want to get up early the next day.
Disneygirl is right when she says keep stalking the reservations. I managed to get a lunch one 5 days before my trip. While I was there, I saw another one open up, but declined to take it. Stay flexible.