So sorry for your loss, Here is more information on where to enter the information on your return
Yes the correct way to answer how many months a child lived with you who was born or died during the year it to answer the whole year. Are you claiming the dependency exemption for the child and does it say dependent beside the child's name in Personal Info. Also would the child have been under age 17 at year end? The child tax credit is only for a child for which the dependency exemption is claimed and who would have been under the age of 17 at year end.
again my deepest condolences.
