I want to add a note about dependents.
First, I don't believe you qualify to file as HOH, because you said you live together with your spouse. This disqualifies you from filing HOH (to the best of my knowledge) even if your home is outside the US or your spouse is a non-resident of the US.
Second, you don't qualify for the $2000 child tax credit unless the child has a social security number at the time you file an on-time tax return. If your child is not eligible for an SSN or your don't get one in time, they will only be eligible for the $500 credit for "other dependents". If your child IS eligible for an SSN via citizenship or a green card, you should delay filing your tax return until it arrives. If you need to delay past April 15, make sure to file an extension request so your tax return will be considered "on time."
Lastly, to claim your child as a dependent, your child also needs an ITIN, which means if you file a joint return listing your spouse and child, you will need to include 2 separate W-7 applications with the required documentation.
https://www.irs.gov/taxtopics/tc857
