If Charlie is 17 months old he will not get any bigger unless he overeats
He;s within standard so he's perfect.
If Charlie is 17wks (typo maybe) he may get to 10lbs full grown.
Either way he's a winner.
If you double their weight at 12wks (3months) and add 1lb that will
give you an estimate of their adult weight.
Hope that helps you,