At what point does he win it regardless if he finishes the season.
I say about 3-4 weeks. If he is healthy and still has similar number to now around Sept 8, he probably secures it.
Wheeler is likely his nearest competitor to him right now, being on the 1st place Phillies and having similar traditional stats like wins and ERA. Greene will also get consideration too as long as he continues to pitch well. Skenes is a dark horse to win it given his dominant performance in such a short amount of time and being super flashy.