Recovery rebate credit, I have 4 dependents that qualify for federal stimulus. But only received payments for 3. I

To adjust your Recovery Rebate Credit, you will need to identify what payments have or have not been received from the two economic income payments in TurboTax.

This section is at the beginning of the Federal Review. But, to see it, you need to be at the end of Other Tax Situations, first. To get there in TurboTax, follow these steps:

• In your return, click the Other Tax Situations tab toward the top of the page
• Scroll down to the end and click Let's keep going
• At Let's make sure you got the right stimulus amount, click Continue
• Be sure to report an amount for each of the stimulus payments as received. If the particular payment was not received at all, enter 0 and click Continue. There are only two entries on this form. Enter the amounts as received for each stimulus payment. 

It sounds like you have already gone to check Get My Payment. To check other IRS Resources, see: Questions and Answers about the Second Economic Impact Payment which is still getting updates.