Help Puppy Sitting and He Wont Stop Whining?

hi im puppy sitting my sisters 4 and a half month old jack russelle terrier and he wont go to sleep, my sister and her husband have crate trainined him, but everytime i put him in the crate and tell him its time to go to sleep just like my sister does he whines and complains. he continues on like this for hours and wont stop. the only way he falls asleep is in my arms and when i got after to put him in his crate it starts all over again soo help please we're both starting to get very sleep deprived and im puppy sitting for a week still

Suggestion:

The best thing you can do is ignore him. Don't yell, don't point your finger at him, don't get frustrated, don't even speak. Just put his crate in a separate room, turn off the lights and close the door. Eventually he will learn that whining won't get him attention, this is the best thing to do while training a dog out of those behaviors. Be sure that he's gotten all his needs taken car of. He ate, he drank, and he went to the bathroom. Also it doesn't hurt to have an old but still good blanket in there, in case he's cold or simply wants to cuddle up with something. Or maybe even a toy to entertain him a little.