Sounds about right. I just reference the amount of various foods from online sources. To be honest, since I do about 2 tablespoons of psyllium daily, I am usually rest assured that I'll reach my requirement because I'm good with daily vegetables. When I first started out though I would tally up every food just to get a general idea of how much 30g actually is.
I do slack some days, it happens when I stop paying attention. I mean, having to watch all these things like yeast, gluten, fat, sugar, salt, etc.. some days go by where I forget about the simple maintanence. It happens to the best of us I'm sure..but there's no question I feel awesome when I get my two banana stools a day.