Ideally something totally different to all the carnage and terror coming up in CP.
Looking at the list I'd say Death Stranding, the perfect peaceful zen game in contrast but since you're not even halfway in yet I doubt you can make it in a month.
Sifu is short and still the best realization of a kung fu brawler in years if not ever, and has plenty of content with updates this summer, like extended training mode against different enemy archetypes and some options to make it a bit less stressful.
But if you liked Psychonauts 2 that sounds like a plan.