Rapid autoimmune fat loss - how often would I need new threads & what kind for lower face? (Photo)

I have mild laxity of the bottom of my face from rapid autoimmune fat loss. How often would I need to get new threads put in, and what kind should I ask about for Nasalabial folds, marionette lines, and under my chin? And is this type of laxity likely to come back without any further fat loss and the collagen building from the threads? Thank you!