So, I got incredibly sick of really boring tasting bread, and decided that I would do something I've wanted to for a while, and make a wild yeast starter.  I'm... 4 days in, I think, and my baby is now having troubles.  I started with equal amounts of rye, whole wheat and unbleached white flour, and a few whole rye berries, and warm filtered water. I had bubbles in the first 24 hours, (and it was starting to smell a bit sour.) I've been feeding 1/3 cup of starter every 24 hours with 1/3 cup of white, unbleached, organic flour, 5 tsp of dark organic whole rye flour, and 1/3 cup of skin temp tap water. I rinse the jar, just so I don't get a bunch of dried junk on the walls and can see in, then I put it back in the jar, cover it with a dishtowel, and let it sit.  Its definately yeast in there, it smells like it. (ok, it smells kind of vile, like a yeast infection or something, but very very YEASTY) I've been feeding every 24 hours.  In terms of temp, its been fluctuating a lot. we've had days where its probably 85 or so, and then days when the house temp is probably closer to 65.  I'm not really sure how to keep the temp constant and warm. can't set it on top of the fridge because there is a cabinet there.

 so the problem is, its starting to die one me! or at least, its bubbling less. and it never really increases in size hardly at all.

does anyone have any suggustions? do I need to keep my baby warmer? how? do I need to feed it more often? something else? should I cap the jar instead of draping a towel over it?  Thanks :D