It's hard to say, if you started the seeds yourself, you would expect them all to be the same, but there could have been a different cultivar mixed in. In any case, I'd prune it back and not water it much. If it feels like it might die, it could go into a fertility frency, lol, but it's getting kind of late now to have them grow and mature before frost. Maybe not in your zone. What can you loose, your not getting any fruit doing what you have been doing. Have you continued to have really hot days? Sometimes they don't like to set fruit on really hot days either.
