I spent so long researching microdsoing and all I'm doing is posting my personal experience after reading just about all of the forums and reading charts.
Journey:
Started at .03 - .05 mg Eod in may. Then went to .1 mg every third day in June. Then .125 mg Eod in July-August. Then .125 ed in September. Now at .167 mg per day.
You can get it to pieces this small with a good knife and practice. I'm guessing at the dose based off the fraction I cut it into.
I started off on saw palmetto 900 mg a day-Ish. That gave me erectile dysfunction one night and I don't use it anymore.
On .03-.05 mg, my hair loss went from 50 in the shower to probably 30. Not enough to stop it, no sides felt.
I noticed sides taking .07-.10 mg after one month. Brain fog. So I started taking it every third day in June. I noticed watery semen and lower labido. I was afraid I couldn't perform with women but It wasn't an issue it turned out. Shedding started in July. I was losing 70+ hairs in the shower for about 3 weeks so I started washing my hair only every third or fourth day. Kinda gross but I wore a hat. In August my hair loss went to about 30 lost per shower. My labido went up and erections were harder. In September I started only losing 20 hairs in the shower. At a higher dose of .125 my erections were about 20% less (and it's stayed that way) but no problem in bed, no feeling loss and no brain fog. No morning wood after this point though. At the end of September I started noticing more hairs in the hairline coming up. I started losing more though so tried .25 and it killed my dick for two days. I decided to try .167 ed and I've stuck with that now with only a few issues. I feel a little tired and need about 1-2 more hours of sleep a night. Erections are not as strong as before but it's not a big deal. I can barely notice. I read that it can affect depression and my existing depression is definitely worse than it was before finasteride. It affects your hormones so I take this into consideration. I get a few eye floaters too. They seem to be going away. That lasted like a week. My body hair grows really slow now. Chest hair, armpit hair etc it is much thinner. No more morning wood and I have to urinate more at night (that's when I take finasteride) All in all it's pretty much stopped my hair loss but there's always a few sides to anything. I won't be upping the dose and if I notice anything terrible like the sides at .25 mg then I will just shave my head a few years down the road. I will probably lower the dose to .125 mg ed here soon because I think .167 is too much still.
Edit: I take biotin, silica, zinc 50mg/day, vitamin d, vitamin c and eat extremely healthy now vs before I started.
Pic in white shirt is most recent, the other was 1.5 years ago.