I can say this to help
At 8 months - I really doubt he's done growing girlfriend
My Chanel kept growing till almost 1-1/2 years I think ? I wonder when they DO stop growing ....That's a really good question....Cheri didn't seem to grow too much after she turned a year old.....
and yes - We'll be here for you with questions you may have ...the breeders here offer so much good advise ... I've learned more here than any other site....