Just because strings were cut, it doesn't mean Kim is fully in control of his own country yet. I took the summit to be an update on progress at cleaning house. If Q has gamed all options, then the amount of time needed is a known. I'd guess 12 to 18 months. Sooner is a bonus.
So everything going according to plan. Plus, the cabal were forced to play two cards: Cohen and the outbreak of hostilities between India and Pakistan. Two less things to worry about later