I’m happy to say that none of the 7 have lost weight, and all but one have gained. Though small amounts, they’re tiny anyway.

Black and white up 5 grams
White kitty 1 up 9 grams
White kitty 2 up 8 grams
White kitty 3 same THis is the one that almost died but was the heaviest of all anyway
White Kitty 4 up 3 grams.
Tabby 1 up 7 grams
Tabby 2 up 9 grams