If you're asking that question the answer is yes...in my opinion trips should be spaced out by at least 2 weeks (even that can't go on forever good to have a full month inbetween trips often as well, maybe longer breaks sometimes, depending on you as an individual, what's going on in your life, etc)...
I used to trip a few times a week quite often a few years ago, that actually slowed down & limited my ability to gain therapeutic benefits from my trips, and after a while of that my trips just weren't as magical, epic, novel, etc as they should be (giving myself a couple months without a trip brought all the magic back & then some, since then been tripping once, sometimes twice a month & my trips are better than ever, not to mention a hell of a lot more useful)
Personally I'd say I'm glad that I had the phase of overdoing the psychs, as it taught me to be more respectful & balanced, but a lot of people would have wound up in a mental institution from a lot less than I was doing, if not for my strong, logical mind I easily could have lost myself in that time