Would you recommend making it shorter or longer so the baby can use it longer?
I’d say longer - bigger is usually better than smaller
What pattern are you using? I ask because we’re in the middle of a sort of baby boom here, and I have like 4 people I want to knit blankets for!
I gave a new mom a knitted Bumper Blanket from Oat Couture “building blocks” instruction include DK, WW and Chunky yarn instructions. 3 yarn weights for one pattern Loved that! I used a worsted weight yarn with the DK instructions and was slightly off gauge but not dramatic to notice. Please remind the new moms not to use heavy weight blankets for over night use. refer to
for crib safety