They all grow at different paces but 10 months old and 180g does seem kind of light. Dot is about 9 months and she weighs 1064g empty. She is a bottomless pit though and has a stronger feeding drive than both my BCI boas. Kind of interesting your snake has gone off feed twice in that amount of time. When I got Dot at about 12", I was feeding her every 3-4 days until she hit around 500g. Then I backed her off to once a week on weaned rats and now she is up to small rats although she did take a medium rat which took her half an hour to eat and put her in a food coma in her warm hide for about 2 weeks And like BCR said, switch her to rats now while she is young and eating. I switched Dot over to rats the 2nd time she ate for me. It will make life a lot easier for you when she grows up.