He was spry and fine this morning and in the five or six hours he has just been sleeping and not eating. He drank a bit of water a few hours ago but nothing now. His peeps have gotten a lot less energetic... he is very weak and about 3 days old now. What can we do? His poop was pretty runny/watery a few hours ago. Very attached to this little guy, he was very energetic yesterday, now he won't even get up when we open the carrier... please help.