You can end them. If you use seller hub, they are available for 90 days. If you are going to overlap that, schedule them for relist. That gives you another 21 days.

Or use the holiday mode, then end them. That should give you 120 days.

If you opt for using seller hub, listings can remain as unsold for 90 days for relisting later on.

You may need to put listings in holiday mode for a few weeks before ending them into unsold.

You are going to have to end those listings, I think. The holiday settings only allow a maximum of 30 days.