I am of the opinion that the only stupid question is the one you don't ask... as long as your motives are for self enlightenment...
Yea, three a day are a lot of meetings... but that many meetings early on is not uncommon for people in AA. I do about that many in a week, now, almost three years.
It takes what it takes... you sound sincerely concerned and interested... he's lucky to have good friends.