Here's the schedule:
Big 12 Wrestling Championship Schedule of Events
11 a.m. - First round matches: maximum of 10 matches on two mats
Noon - Semifinal matches: 20 matches on two mats
Break
4 p.m. - Consolation matches: 10 matches on two mats, followed immediately by third-place matches: 10 matches on two mats and eligible challenge matches on one mat
7 p.m. - Championship matches: 10 matches on one mat
Live streaming of some type is here:
Big 12 Conference - Official Athletic Site
You have to click on the link. I haven't taken the time to extract the direct link.
I believe the finals are on FSN sometime later.