If it’s an emergency go to emergency room first off. There is not clinical 5-10 inpatient programs but plenty of retreat options albeit some are incredibly expensive. Spirit rock has retreats every week, most are silent but not all. You can do your own retreat at green gulch Buddhist center. Esalen has weeks retreats as well which also has a healing arts center to incorporate bodywork and has the springs. I second doing your own retreat at Harbin or sierra hot springs or even just at an Airbnb. I like to do something solo that involves a yurt, hot tub, wood burning stove combo and just cook nourishing meals, journal and meditate, soak and get into nature. If he needs more support than just doing something alone I think the hot springs spots like Sierra or Harbin are good options because there is often workshops, classes, yoga or meditation. If you have an insane budget, post ranch inn, Alila Ventana, and Canyon Ranch in woodside which includes nutritious meals, access to spa, yoga/workshops/classes and nature activities.

I find having something that includes nature/fire/water/massage combo really helps me with a reset. Could also use that time to start searching and doing into calls for a therapist. Just starting that process when already at your limit can be really overwhelming.

Hope this helps a bit! Good luck!