108 lbs!! wow!! That's big for a Lab or Golden female, not to mention a doodle!
I'm a complete failure at predicting size/weights. With the poodles being so much more slightly-built, I think the heights are a tad easier, in that with 2 parents you can sort of figure that's the range. But I've been wrong before, with one of our F1b males being a full 2" taller than his mom or dad. But he is slightly built, or all legs, :wink: so his weight is on the poodle side of things.
Seems like a breeders' forum I visit had a formula at 2mos. or at 4mos. <?> Sorry can't remember. Jac? Do you remember that one?