Do I need to cycle maca to keep it's effectiveness?

I've been taking maca powder capsules daily last 6 months to help with libido issues. But it has also helped a lot with my general mood, and of course the libido went off the charts initially but also lowered a bit and has been great ever since.

I should note that I usually get winter blues in December since years, and was same this year as well. I want to point out that as the reason behind low libido in December but also want to check if maca gets less effective over time.

My only question is do I need to cycle it in and out periodically to retain effectiveness?