Not so much. It is mostly an open world game and the hints given in the events page tell you want you need to do to advance any particular plot. There is also the location info screen where it lets you know when locations are active.
There are things that happen after the winter break so you need to play a few weeks past there to get all the content. If starting a new game, there are events that were introduced much later in the development cycle with some minor characters like Tenma or Charlotte that can be accomplished early in the school year so there is always something to occupy your time. The only relatively dead zone is the mornings on the weekend.
I did notice the game consistently crashing at 22:00 if you hit the delay hourglass. I don't know if that is a feature of the incest patch so I have ignored it.
