I’m having the same issue with Mother’s QQ Hybrid, however, it does regenerate automatically whilst I’m on the move. This usually occurs every 3 weeks.
Motability cars:
2015 RR Evoque AWD 2.0 TD4 SE Tech - written off
2017 Toyota CH-R 1.2T Dynamic CVT AWD - written off
2019 BMW X2 2.0L Sport
2023 Nissan Qashqai e-Power N-Connecta