If you spam gifts and whatnot, you can reach 100 relationship before the game has time to dripfeed you the relationship events. They cannot happen on Tuesdays and Thursdays as you have class on those days, and I think there might be some mandatory delay between scenes as if I force my relationship super high it still feels like there's an at least 3 day gap between the "running unlocked" and "resting unlocked" scenes. Thus, you likely just have to keep going and upgrade your camera to maintain the relationship between loops until the game finds enough valid mornings to give you relationship events on.