A week can make a huge differance in what you see on a trailcam. I had a set that was out for 8 weeks before I went back. Only one buck out of 1500 pictures. Put the cam back out and then went back in one week just because and had pictures of 4 different really nice bucks that I hadn't seen all season.
I do agree that we are not seeing as many as we should. I have a buck/doe ration of 5:1 according to my cams. Not going to be shooting any bucks this season
I also have seen alot of late fawns this year...born mid July.