When do soft spots go away on a baby?

Can shrink or grow. The soft spot is a simple opening between plates of bone that can be tiny or > grapefruit in size. It can widen some or become narrower as a baby grows, but most are undetectable by 6-9 months. It is subject to change over time and the amount can be verified as OK at your next scheduled well checkup.
Varies. The soft spot on the head can be expected to completely close by 2 years of age but it would not be unusual to no t be able to feel it by 9 - 12 months of age.