I would think that waiting an extra hour or so one day a week wouldn't bother your puppy at all. With puppy feeding though, the important thing is just to monitor your puppy's appearance. They should be maintained a little on the lean side, but not showing rib or other bones. I usually fed my puppy twice a day, but always kept dry kibble out where she could get at it during the day if she got hungry (which can happen if they're unusually active). If your dog is created while you're at work, you could leave some dry kibble for her in her crate when you leave.
It's not the size of the dog in the fight, it's the size of the fight in the dog. Mark Twain