The leaderboard defaults to a rolling 90-day period, so if your score is dropping, it just means you’ll need to stay active to maintain or grow it
You can check out how scores are calculated here:
We chose a rolling window to give newer or returning members a fair shot at climbing the leaderboard as others become less active. You can still view all-time scores by heading to the leaderboard and changing the date filter.
That said, do you think a different time frame would work better?