Just got it, question about regimen!

I just got my first ever dose of Novavax. I previously have had all Moderna, and so I have some questions. Two questions:

1. Am I correct that in 2 months I need to get another dose, and in 6 months I get one more? Is this correct?
2. My mom is going to get vaccinated today, and I will probably have her get Novavax. If she only gets this single dose and doesn't do the other two doses, will she still be as protected as getting a Moderna?

reference post about where I got the vaccine, for those curious: https://www.reddit.com/r/Novavax_vaccine_talk/comments/1fd5hui/just_got_it_avail_in_albuquerque_cvs_and/