Our male cavapoo is 7 months old. There is a ruffwear harness we want which is currently in the sale. The XS girth is 17-22 inches and S is 22-27 inches. His girth is 21 inches so currently an XS. can anyone advise me if he likely to grow much more? He’s 10.5kg He hasn’t really put any weight on in the last month but he put on a lot on his summer vacation at the breeders so he has been slimming back down to his desired weight.