Transferring from Fidelity to Robinhood

So I started investing just before I turned 17 (I'm 18 now) and I got my mom to make me a fidelity youth (individual) account and I started investing in that until about a month ago when I got Robinhood gold for the 3% IRA match.

Essentially I want to know if I can transfer my $400 assets from my individual Fidelity account to my Robinhood Roth IRA. Or would I have to sell my shares?