Direct deposit info not on Federal Return (filed and accepted)

It seems that Turbo Tax did not put in my bank routing and account numbers when I filed my Federal taxes.  I a assuming that the issue was that I was not getting a refund nor did I owe any taxes.  The numbers were put on my state return, again because I am assuming, that I was entitled to a state refund.  How do I correct this on my Federal return in order to get direct deposit of the stimulus payment?  I am out of the country at this time and cannot return to the USA until travel restrictions are lifted....