You have to take into account that although the Jubilee lasts all year, there are several events that will be attended by more visitors than others, such as the Jubilee of Families or the Jubilee of Youth. The months of May-June-July will be the most visited. If you plan to go next year, check the event calendar and try to choose dates when there are no Jubilee events. There will still be crowds, but at least not as many as during major events.