Wean toddler from pacifier?

My son is 2 and uses a pacifier at naps and bedtime. Three weeks ago we had a new baby and he uses a pacifier. How do I wean my older son without creating jealousy toward my new child? I would allow my older son to continue with the paci for a little but he rubs his eyebrows as a soothing technique whenever he gets it. He has actually rubbed the outer corners of his eyebrows off since he does it so much.