Update; my mom had me check her messages on her phone for whatever reason and I saw she had my contact set as my deadname. After I had to fight with her for five years on my identity and then her claiming she accepted me when I was seventeen.
After all of this time and progress on my dad calling me my preferred name and pronouns, he comes to me today (after a year of no slip ups) asking me to call me by my deadname again and I found out that he has my name on his phone as my deadname again