Get your taxes done using TurboTax

Then yes you should be able to get both the stimulus amounts on your Joint 2020 return.  When you get to the Stimulus screens say No you didn't get the amounts listed.  Then 2 boxes will open up. Enter the amounts your spouse got.  And you should qualify for your missing 1200+600 = 1800 on 1040 line 30 for the Recovery Rebate Credit.  Even if the parents got it for you.  You can get your own now.