Tolerance from smoking once a week?

Hey guys,

So I didn't really use weed until about a year ago. I never went above vaping one or two times a week. Sometimes I also use the AVB from my vape (only ever vaped or did AVB really). In the beginning, 0.1g vaped would get me quite toasted, now 0.2 to 0.4g vaped doesn't get me that far really. Although I never had like hallucinations or stuff, it was always just a chill feeling with munchies and occasionally finding something (e. g. my 3D printer running,...) really fascinating. If I use 0.4...0.5g of AVB chased with enough fat, it still gets me there and it's actually what I prefer more these days.

Could this really be tolerance with my rather rare use (compared to others on this sub or /r/trees)? Or is it more like a "I'm used to this now" kinda thing and the intensity just wore off? Don't get me wrong, I still enjoy a chill evening with a bit of vaping, but I also wonder if a tolerance break would even change anything at my level of use.