Yep, you can definitely check too frequently. This topic was just discussed not too long ago (maybe try doing a search, or just look back a page or two), but everytime we open the hives, smoking, jostling frames, ect., we're setting the girls back days.
I try to take a look once a week - later in the summer as I get busy with things, sometimes that week slips to 9 or 10 days, but if you don't get in there often ENOUGH then you can start running into burr comb problems, and issues with queenlessness, ect. that you might have been able to avoid or detect sooner if you're not getting in there often enough (I'm speaking of those that say I put them in in the spring, and take the honey in the fall).
This is only my second season with hives, so I'm in no way an expert, but I'm sure some of the seasoned members on the board would advise the same.