Get your taxes done using TurboTax

Simular question.  My son is 21, in college full time and I support 50%+.    Do I HAVE TO claim him as my dependent or can he claim himself if I don't claim him?    Reason being the stimulus payment are more then the $500 tax credit.  I make north 200K.    If I can allow him to claim himself for 2020 can he get the first 2 stimulus payment made in 2020? 
Thanks in advance