We're not sure that one of our red-eyes are eating .... any help?

["Red-eye"_Matt]

One of the two red-eyes that we got last friday doesn't seem to be doing anything. When I check the tank he is always in the same spot (I check on them 4-5 times during night) while I can watch the other making his way all over the place. The one that doesn't move doesn't seem to be eating and I know that you should give it some time for them to become adjusted to the new area but it has been 5 days. I checked on him this morning and had to put him in one of the water dishes to soak some up as he was dehydrated and afterwards he started to roam around a little watching a few crickets which I hoped he would eat but he just found a spot under a leaf and went back to sleep. He still looks healthy and he doesn't look like he has lost much weight if any at all.

Should I be concerned yet or just give him a little while longer?

Thanks

Matt