I have two sources of interest income yet the form has room for only one reported interest income?

After you complete the entry of one Form 1099-INT you can enter another Form 1099-INT.

Yes, you can enter more than one 1099-INT on your tax return. 

Here's how to enter more than one interest item in TurboTax Online:

1. Open your return.
2. Select Wages & Income.
3. Scroll down to Interest on 1099-INT, select Start or Revisit to the right.
4. Select Add Investment.
5. Answer Yes to Did you have investment income in 2023?
6. On the screen Let's import your tax info, select Enter a different way at the bottom right.
7. Select the interest tile, then Continue.
8. Select Type it in myself at the bottom. 
9. Enter your Bank's name and the amount of interest in box 1. 
10. Select Continue, then answer any remaining questions in the section. 
11. Repeat starting at step 4 as many times as needed to enter all of your interest income.