Well, is it probable?...Probably not
Are the odd higher it happens?...No
Is there a chance it happen?... Oh Yeah
Miami had very little to work with. Had the least amount of talent in the NFL. Had 1st time coaches in new position, including HC, yet by the mid-season stretch, the Miami Dolphins was not the team you wanted to play if you were fighting for a playoff spot...Patriots, Eagles, Colts found this out the hard way.
This year there will be more experience on the coaching staff, and the talent could very well be Night and Day.
With one of the highest salary caps (If you consider how many premium players the Cowboys and other teams will have to re-sign compared to Miami, you can say Miami actually has the highest), which will allow Miami to make a lot of quality fixes to their Offense and/or Defense before they even reach the Draft.
If Miami can have at the very least good draft (Does not have to be great), Miami will go from one of the least talented teams, to one of the talented teams within one year.
That could work in Miami's favor to reach the playoffs, and beyond. The Patriots are on the decline, take away Brady, and they are no longer as big a gimme to win the east as they have been years past (Even if declining Brady is there...This is not the same team.). The Bills though looking good, especially on defense, they are still not a superior team, and the Jets are still the Jets, coached by Gase.
Miami has a chance, but quite a few things have to work in their favor, but 2021 and beyond could see the Dolphins back to their 70s. 80s, 90s glory.