I was trying to make another baby sweater using thinner 3 ply yarn and the same I hook however as you can see it’s too small for a 12 month old baby. It is closer to a newborn measured against a newborn onesie…
Sweater Hook Guide for me
Bernat Baby or 3 ply thin yarn I hook for Newborn Size
Bernat Baby or 3 ply thin yarn J hook for 9-12 month Size
Red Heart Super Saver and I hook= 9-12 month Size
The sweaters below show the difference in size from the white newborn to the 12 month size green one….