Chachi, do u mean 8 ounces when u say 8oz ? i find it a bit difficult to convert coz we use kilo's, and ounces here, but if ur little one is 8 ounces then dont worry too much she will be fine as long as u keep her warm ( they cool down fast) and make sure she eats and drinks well, she will probably need more feeds then 3 or 4 a day, make sure she is lively and u will find that she sleeps a lot, well thats what Chelsey did at that age and wheight she is now 16 weeks and weighs 14 ounces and she still sleeps a lot, she loves her food and is going strong... shes growing really well, she rules the roost... if she keeps growing like this she ll be a perfect cuddly little girl