How long after dissolving lip filler due to migration do you have to wait to have them refilled to avoid migration again?

The answer is you can refill after one week but I would suggest two weeks.Migration is not a problem if you use the right filler and technique and don't over fill

Fillers do not migrate.
I’ve been using HA fillers since Restylane was first approved by the FDA in the 1990s.
The concepts of fillers migrating is a convenient excuse providers use to not take ownership of less than ideal results.
Each provider will have their own view of when it’s appropriate to re-inject after the use of hyaluronidaze.
I suggest you ask your provider or better yet consider finding a provider who does more consistent work.
For reference in regards to quality work using fillers I often refer patients to look at the website of Dr. David Mabrie MD in San Francisco.
He’s a facial plastic surgeon who’s practice is devoted exclusively to only working with facial fillers.
His work is some of the best I’ve ever seen and serves as a reference point what can be obtained using fillers. I’m not suggesting people travel around the world for things like lip fillers but it’s important to know what can be achieved and strive to find providers who can get similar results.
Best,
Mats Hagstrom MD