Someone somewhere has their understanding of the plea agreement mistaken. Normally the state website is accurate, although I've known them to make mistakes on time calculation
https://www.inmateaid.com/ask-the-inmate/my-fianc-eacute-got-locked-up-10-18-2021-and-after-court-on-12-20-21-took-a-deal-of-3-years-at-50-he-was-held-at-the-county-until-he-got-transferred-to-stateville-nrc-on-2-8-2021-but-i-rsquo-m-seeing-his-release-date-isn-rsquo-t-until-may-of-2025#answer
Accepted Answer Date Created: February 13,2022