Another update along my microdosing journey for those interested. Like many, I tend to vary cannabis vaping microdose amounts depending on my mood and I'm looking for... it's up and down. In my most recent experience and first days use after my weekly break, I made an explicit attempt to keep the individual and total microdose amounts low for the day. Here's how it played out in detail.
The first vape session (after my weekly break) incorporated 0.035-0.040 grams of strong sativa cannabis vaped at ~320 F (in a premium convection desktop vape) and consisted of one 15 s draw. It was strong and potent with visible vapor. About two hrs later I did a second session, same ~320 F temp and another single 15 s draw (light vapor). It lasted me another two hours with strong effects. Then I bumped the temp up to ~395 F and did two 12 second draws to finish the bowl off. It wasn't much at all for visible vapor but that last me another two hours with impressive effects.
~6 hrs after the first microdose bowl, I put together a second fresh bowl of cannabis with the same amount (0.035-0.040 grams) and did one more 320 F session with a single 15 s draw again. That was it for the rest of the night.
I was planning to do another session or two but never needed it at all (and was smart to stop).
So overall... from vaping a 0.035-0.040 gram dose, plus a single low temp vape draw from another similar amount, I ended up having potent effects for 10.5 hrs (before going to bed late) and slept poorly, haha. Microdosing is definitely giving me strong and potent effects.
Here's a picture of that 0.035-0.040 grams of strong sativa cannabis after vaping to ~395F. It's sitting on standard lined notepad paper.
Here's some further info. The first day after my weekly cannabis break is always when sensitivity is the highest (and it's commonly known). After that, my tolerance builds very quickly. I'll vape similar amounts on the second day in a row (and sometimes add another dose and its sessions) and the effects will be impressive but not as strong as the first day. That trend continues on the third day of vaping in a row as well.
My testing and evaluation shows consistent cannabis breaks every week are an important part of keeping my tolerance low and the effects strong. And there's still room to move lower if I want. Microdosing is working well.
Good luck and enjoy your cannabis journey.