You need to overcome the urge to do things like dive for volley balls. That is far more aggressive activity than your brain is ready for. That kind of activity can be a trigger for all kinds of symptoms returning. The severe head movements looking up and following a fast moving ball is also likely too much neck movement.

It is very common for the activities of one day to not show up with symptoms until the next day. The dopamine flowing during the busy day is not there the next day and one's brain crashes. It may even end up dopamine deficient.

Many of us have learned to expect or even plan to have a bad day after a busy day.