Bananas - Second Attempt.

Just realised that in my first message I left
out the last sentence . I'll try again in full.

I have a banana plant overwintering in my cold greenhouse.
Most of the leave are drooping and looking tatty
but there are two new ones bursting through.

What should I do - at this time - with the dying leaves?
Cut them off now, or wait until later in the year?

Thank you.

John