During his three-year career at North Texas from 2021 to 2023, Nwaiwu appeared in 28 games with 22 starts, earning freshman all American and to the Conference USA All-Freshman Team in 2022 after utilizing a redshirt season. After earning third-team all-conference honors in 2023, Nwaiwu entered his name into the NCAA transfer portal.
Oklahoma
Nwaiwu transferred to play for the Oklahoma Sooners. During his first season as a Sooner in 2024, he started in all 13 games. In the 2025 regularseason finale, Nwaiwu made his first collegiate start at center in a victory over LSU. For his performance during the 2025 season, he was named a finalist for the BurlsworthAward, as well as being awarded the Don Key Award. Nwaiwu earned second-team all-SEC and first-team all-American honors.