If you and your wife were legally married as of 12/31/2019, and you lived together at any time during the last six months of 2019, neither one of you can file as Head of Household.
https://turbotax.intuit.com/tax-tips/family/guide-to-filing-taxes-as-head-of-household/L4Nx6DYu9
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
