Lip Incompetence, what are my options? (Photo)

My overbite is gone but my lips still don't touch! I had a consultation for Orthognathic surgery for top and bottom jaws and genioplasty but it took almost a year to get approved by my insurance and I decided that I absolutely do NOT want to do that. I have spoken to a cosmetic dentist in the area about lip re-positioning surgery paired with botox of the upper lip and lip fillers. My only concern with that is relapse of the lip. Is this relapse common? and are there any other options?