In TurboTax the 2020 stimulus is not applying to a child we had in 2020. Do I need to do anything different to make sure we get the stimulus for the new child?

We got out $1200 for each of us and $1000 for out first two kids totaling $3400, but had a child in 2020. Im assuming we should get another $500 for our 3rd child born in 2020 on our taxes because  it was based of 2019 taxes. When TurboTax asks how much we got in 2020 it says $3400 is correct.