Get your taxes done using TurboTax

near the end of Turbo tax in the review section it asks how much you actually received for each stimulus payment.  sounds like you have not answered those questions yet. 

 

but $1100 would mean a child.  Did you have a child in 2020? if yes, that is why and it is correct.  Children born in 2020 get you the recovery credit since they were eligible for the stimulus.