If you have noticed a change on your girl's irises, then that's a good sign and means she's still in the growing process. And yes, if her irises have just turned more clear white in colour, then she can very well be 10 months old by now.
I'm now able to open the photo you attached on your last post. He is indeed younger, while his cere has a deep purplish colour it doesn't seem to have yet the mature royal blue colour. I'd say from that pic that he is 5 months old.