Retirement tax questions

Yes you have to figure out any US Govt Obligations dividends yourself. When you get the 1099 from the mutual fund company there should be a sheet giving the state percentages for each fund. But last year for 2022 Vanguard didn't include the sheet and I had to get it online from their website. You get the percent and multiply it by your dividend. Here's a sheet I made for Vanguard.