I'm not necessarily an expert in Treasury Direct, but I have had an account there for a number of years.
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No, Treasury Direct does not have a way to indicate that you will be reporting every year...AND...keeping track of the interest accrued each year might be a nightmare unless you only have a couple bonds...and you have to remember to use your account access every year to actually track what was accrued each year. Your own spreadsheet of all your bonds and it's year-end value every year would help.
True, that would be a nice option for Treasury Direct to have an "option" to include a yearly 1099-INT. But as far as I've ever seen, (and as they state themselves) they only issue a final 1099-INT once you actually redeem any bonds, or any of them mature in a particular year. And they don't send them out...you log into your account to get the 1099-INT as a download.
See:
Individual - Tax Considerations for I Bonds (treasurydirect.gov)
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
