I know what you mean. I think . . . I should say I KNOW we get more attached to them than they do to us. Kinda sad. If only they knew all the emotion we put into them! lol
To be totally honest, from what I've read, keeping a little one like you have would stand a better chance of survival in captivity than an adult one, which usually does not survive captivity (esp the SHL like you have). But the amount of time, effort and money to keep him healthy and happy would be the same. A HUGE time commitment. They're simply adorable but sometimes even if you're willing to put in the time and money they still don't survive.
Also, I'm not completely sure about a little guy like that being out so close to hibernation. Not sure how quickly they grow and what the likelihood that he could survive the winter with his age.
I guess to sum it up . . . if you're wondering if he'll forget how to take care of himself since you had him a week . . . the answer is "no". They're wild creatures and that's pretty much hardwired into them. The parents don't really take care of them but they seem to naturally know about finding food, burrowing, etc. However, if you're wondering if a little guy that age can make it through the winter with his age and size so close to Fall . . .that you may want to post another question and get someone like Cable or Reptoman to answer your question. They've raised youngin's like that.
Just wanted to make that distinction. He seems really small. Very cute though, isn't he??
Good Luck!