Points Advanced Booking Adjustment

Quick question.

I have a points advanced booking as a globalist for 7/4/25-7/8/25 at ventana Big Sur. I need to come back a day sooner than I thought. Am I allowed to make an adjustment to my points advanced reservation and change it to 7/4/25-7/7/25 without losing my standard award room spot? Or does any change in my reservation make me lose my “hold” on my standard award booking?