I don't think this can be "shoulded."

Your therapist is a priest. His time off may be spent in sabbatical which is a fairly normal practice with religious leaders (and a needed and necessary one).

A therapist who has created his own practice may have designed it in such a way that he specifically plans for a lengthy period of time off at the same time that, perhaps, his spouse or children have time off. I don't begrudge anyone that kind of time. Professionals who don't take the time to unwind, regroup, decompress, tend to burn out -- no matter what the profession is.

I believe my last therapist probably took of in the neighborhood of two months a year, but his preference was to take it a week or two at a time because that matched up with his partner or his kids and grandkids.

A different one at my university took a full month during the summer (it was probably contractual). He arranged for another therapist on campus to be there for his clients if needed.

In other countries, I understand it is pretty common for professionals to take several months off at a time. That's the cultural norm.