You didn't mention any gourds on your vines. What is the condition of the gourds? Have they reached a size that would carry them through to maturity?

If there are no gourds, or they are very small, they probably won't make it this year.
As for the coffee grounds, and egg shells, we try to add them before the growing season, and work them into the soil.

You may have to consider this season a learning season, and try again next year.

Jan

Older leaves die, that is normal and not a problem. As long as the new growth is healthy the plants are fine. If you don't have gourds forming yet you might not get any to maturity before frost. Hard-shelled gourds take awhile to grow. I plant mine mid-May in zone 7.