They all can self-start on eating now. There still is a tendency to suck the food. If the chunk is too big to suck in, it travels with the kitten, onto the floor, someone’s back, where ever. Sometimes it is dropped, sometimes it makes it in. There will probably be another few days of very messy eating.
They’re all gaining weight nicely. The lightest is up to where the heaviest started, but they all feel more substantial now and play more.