Hi, like everyone else said, leave water and food out all the time!! My one yorkie is 1 yr. 7 mths now and only weighs 2 lbs. she is completely healthy and happy. She only just gained those extra few onces that helped her reach 2 lbs. after being spayed. The low weight terrified me at first. My other yorkie who is 5 lbs is a smurf to me so Pia ( the 2 lb one) just amazes me. My vet suggested I give her licks of nutro-cal 2-3x a day just to be safe with her. You can get it at petsmart for like $8 Try not to worry your baby is fine
