Don't you just love the feeding routine of a multi-cat household? LOL I tell you what, I've seen it all at my house. Marius has always been a pig, so that made my other cats turn into pigs because if they didn't, then Marius would eat their food. Ugh....it's hard to keep the food separated too. Actually, Priya acted the way you're describing Sky's behavior when she first came to live with us. She wouldn't eat unless I had the kibbles in my hand, and I began to thin that probably wasn't such a good idea. My guess is that Sky doesn't like the change and is trying to get some attention from you. If he was used to eating in the same room as the other cats, and is now eating alone, he may just be having some trouble adjusting. Give it some time and he'll get used to the routine. If he likes you being in the same room as him while he eats, that's fine. He just likes company
**hugs**