Double eyelid crease disappearing after surgery. (photos)

I am 8 months in my blepharoplasty recovery (full incision) . In the last 3 months, my right eye crease size/ fold has changed. There are two crease folds- the bottom is my original fold and the top is the new crease created. Every month, for about a week, the top crease line disappears and goes back to my original fold. However, this month, my crease has remained on the bottom crease fold and I am starting to worry. Why has this happened? What should I do about this? Thanks in advance.

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