He will be fine when he is used to it. I used to leave Bailey and I was exactly the same, but now he accepts me going and he has toys, chews, food and water to keep him busy. He used to whine and cry when I left and I used to be able to hear him walking to my car but now he is in a routine. Your pup will be fine, he will probably need the rest if you are playing with him an hour before work every day! Sounds like you are doing a great job I wouldn't worry!