I got so sick of the polyfiller long ago then went to teabags but that was a hassle, getting it folded properly; so for about a week I've just been dripping, after my last only good teabag bit the dust. At first I was getting lots of drags off of 3 drops, but then it seems like I need to constantly add to it. How many drops is safe, and how many drags to you get on average?