My yorkie is a bit under 5 lbs and she doesn't eat ALLLL day while I'm at work for 8 hours. Sometimes I count how many kibbles I put in there and it's still the same when I come home 9 hours later. She eats like a pig once I get home. I was worried about her at first because she is so small but you know what? When they get hungry they WILL eat. She just sleeps all day while I'm gone so she doesn't feel hungry till she fully wakes up when I get home
Don't worry Wes will be just fine. I also give Coco a little snack in the mornings now before I leave so she has something in her tummy.