its too hard to say if they will be ready. i have a female 08 that eats like a champ but for the longest time she stayed between 600 and 750 grams. in the last few months she went through a growth spurt and now weighs 1500 grams.
i also have another two girls (09's) that were the same size when i got them. one now weighs aprox just under 600 and the other is up to 1000 grams.
what i am trying to say is that some grow slow, some fast, some grow steady, and some in spurts. they all grow at their own pace whether we like it or not.
all we can do is enjoy them when we get the opportunity.
and just for the record i only feed once a week an appropriately sized meal.
john