I think it's about self-knowledge @Angelo. Only you know the answer.
How much is work intrinsic to your enjoyment of life? If it fulfils you, brings you contentment and satisfaction, and outweighs the exhaustion, then keep working, making adjustments as required.
Maybe you could try approaching it as a retirement decision. We're advised to have plans for retirement. You're retiring in a month... what's the plan? How does the thought of retiring in a month make you feel? Panicked or relieved? Are there hobbies you want to pursue? Places to go, books to read, new skills to learn?
Perhaps a few sessions with a counsellor to parse through your options, motivations, hesitations and anxieties would be useful.
Some people with mets get more time than they expect, others get less. And everyone, mets or otherwise, wants to die with no regrets. Keep talking here, let us know what you're thinking. Big hug, K xox