I understand not wanting the current rate. Just make sure you're not still earning at the higher rate. The only way you want to pull out in 3 months is if they were bought in May or November (year doesn't matter).
When is the best month to pull out bonds purchased in the following months: October 2021, December 2021, April 2022 and October 2022?
I understand that money should be withdrawn in the beginning of the month in which you are withdrawing (as you lose interest for that entire month regardless).
Fastest way to check your purchase month is to search emails for subject line "New Purchase" from email: treasury.direct@fiscal.treasury.gov