Another Afghan to Finish

I often start projects but abandon them for a while... Then (sometimes years later) I come across them again. I found this forgotten project in a yarn bin upstairs.

I don't know when I started this crocheted afghan (that looks like a beach towel).

I may have started it a few years ago - then stopped when I developed wrist pain...

My wrists are better now. Maybe I should work on it again.

As-is, it would be fine as a lap cover. But we don't really need any that size. Afghans that get well-used used in our house are a lot longer...

Do I have enough yarn to finish it? Or will I need to buy more?

What to do?! It would be nice to get it done.