But as far as the size of dose, it's certainly very flexible. You may have read where one of Hahnemann's methods of dosing was olfaction -- a far smaller dose than drops! And yet effective.
I think there's a lot about size-of-dose that's uncertain; what I know from repeated experience, is that usually there is a very wide range of acceptable size-of-dose; some *people* are more sensitive than others (some require tiny doses such as olfaction, or multiple dilution cups; some require larger doses; most -- so far as I have seen -- can do fine with large *or* small doses; at least with C and X; I am not sure about LMs).
Just for fun I'll note that my only experience with a dose given by olfaction was -- with my cow. She'd been needing her (yearly or so?) re-dose of her chronic remedy, hadn't been feeling great, and was annoyed with me for some reason. When I offered her remedy in my usual cow-dosing way -- dissolved in water and splashed on what I thought would be a treat -- she just stuck her nose into the pail, gave a derisive sniff and stalked away. And was a changed girl by the next day.

It has appeared to me that LMs are more dose-sensitive than are Cs, but I'm not certain.
Shannon