I am making a raglan cardigan sized 3 months old from a vintage pattern. I translated the pattern from fingering weight yarn to light sportweight yarn to use up some stash, and am using a striped pattern. In order for the stripes on the sleeves to match the stripes on the body, I need to either make the sleeves 1/2 inch shorter or about 1 1/4 inch longer before the raglan shaping than the pattern suggests.
The pattern doesn't have a diagram, and doesn't indicate finished dimensions, but the sleeve before raglan shaping would be either 6 1/2 inches or 8 1/4 inches.
My question is, which would be better, 1/2 inch shorter, or 1 1/4 inch longer. Is there some kind of standard as to how long a sleeve should be for a certain age infant (3 months)? I don't have a baby or a doll to measure, so I'm just trying to figure it out.
TIA
Hesira