Only thing I can add is that I'd probably only use one sachet of Laxido a day, at least for the first couple of days (see how you toilet and adjust accordingly). My OH and I have been on and off Laxido Orange for the last 5+ years. I always start on a sachet every day or every other day, to begin with - sound advice from my GP.
I guess you can't really go too far wrong, you just may end up with very loose stools, depending on how your body responds to it.