And I'm not sure how the phase out increases with 2 children. It says the AGI is increased 10,000 for each child. Did you see this IRS page? https://www.irs.gov/newsroom/questions-and-answers-about-the-first-economic-impact-payment-topic-c-c... Not sure how that is calculated so the 900 max is probably more. But I can tell you that the baby also qualifies for the first EIP check too even though they were born after. So the first one would be 2400+500+500=3,400. So with no phase out it is 3400+2400=$5,800.
Whatever the phase out calculates out to - Turbo Tax is doing it right. Just enter the 2900 you got in the first box and 0 in the second box. Do you get an amount on line 30? Are you using the Online version? Download your whole tax return and check over the Recovery Rebate Credit Worksheet to see the calculations.
How to print your return before filing
https://ttlc.intuit.com/community/printing/help/can-i-print-a-copy-of-my-turbotax-online-return-befo...
