The only way you are going to get that swelling down is to apply ice to that area frequently during the day, it will also help with the pain.
Lip Swollen After Filler Added, How To Reduce Swelling?
Ice is good, bu if you take ibuprofen also it will help the swelling and pain.
Help I need to reduce swelling fast after filler my upper lip is very swollen and this is the second day