Urgent: Seeking Advice on Expiring Credits for Client Project

Hi! Need some credit help, I'm about to lost 9,870 credits from expiration, they expire so quick 😞 I saved these up for a current client project, but the client is postponing the proj two weeks or so - past my expiration period. Is there any way I can keep these, would hate to see 10k credits go to waste and need them for a proj!