Self-care to the max, routine to the max (on your turf it is much easier than on his turf), your place organized and neat to the max. Basically, if you impose a structure of stability over your life, your "crazy" would not be so apparent. For his visit to you, think through every little detail - what you will eat, where you will go, etc. If he wants to change your plans or improvise, that is fine, but you need to have a fall back plan.

Imagine that you were hiring an event planner, except that you yourself are the event planner.