The IRS allows a child who was born during the tax year, to be claimed as a child who lived in your home for the entire year. So, in Turbo Tax, you must choose the whole year as the amount of time your child lived in your home. Please view the Turbo Tax FAQ below, for more information.
https://turbotax.intuit.com/tax-tools/tax-tips/Family/Birth-of-a-Child/INF12019.html
