More dramas

Hey guys, hopefully I'm just being paranoid but after losing one already I don't want anything to happen to Ziggy as well. He's been in the fridge since his sister died, about a week or so. I change the water every morning with fresh dechlorinated water which I keep next to him in the fridge. He hasn't eaten in there at all, but I left an earthworm overnight a few days ago which he didn't touch. He's getting skinny but I'm guessing it's too cold for him to want to eat. He's in a small container but it's longer than him and it's got a tea towel over the lid. The temp is between 6 and 7 degrees. Am I doing anything wrong?

I just checked in on him (I only disturb him once a day to change the water, and sometimes I check before work to make sure he's ok) and he was sitting on his side a little bit, slightly tilted. Then he swam around a bit in a kind of wonky way and then sat still, flat on the bottom. Is this anything to worry about? Is there anything else I should doing? Seeing as my other one was on her side when she died I'm slightly freaked out.

I can't take him out, it's way too hot... I'm waiting for some silicone to cure and not smell so I can try hooking up the chiller again.

Thanks ><