Sorry to hear about baby #4. That's tough, but I think that somehow in these situations, nature knows what's best. Maybe that's just my way of explaining it all.
So sorry for the loss. I fostered kittens for years and it is very common to experience "SKDS" (sudden kitten death syndrome). And often, it IS the biggest, healthiest one. Here's hoping the rest of the kits do well and go on to great homes.
All kitten are getting 10 mL every 6 hours now and mom is doing the rest. I got kitten food and KMR today so they are set for the four to 6 weeks they will be eating regular kitten food.
I wanted to add. I woke up to two full bellies not just one. I feed them at 11 and put them with mom. The get up at 6 am every morning.
OJ of course has always had a full belly and Lucky had a full belly. As soon as I lifted the blanket Tiny came running at the bottle. He ate 15 mL on his own once they take to the bottle it is so much easier. I pulled the bottle cause his little tummy was getting really big and he is now asleep with his bothers.
So I will check Then again at 12 and feed who ever needs it. Oh Tiny has some fat on his today I can't feel his hip bones anymore.