Here's a site that has 2nd half scoring offense and defense:
https://www.teamrankings.com/college-football/stat/opponent-2nd-half-poi...
*ichigan:
2021 2nd half scoring vs against 19.4-10.0. +132 points on the season.
2022 2nd half scoring vs against 22.8-7.4 +218 on the season
2023 2nd half scoring vs against 16.5-4.7 +177 on the season
2024 2nd half scoring vs against 10.3-14.0 -22 on the season
So they go from blowing teams out after halftime to getting worked after halftime.
Also, 2020, before they hired Connor Stallions
2020 2nd half scoring vs against 15.2-13.8 +8 on the season.