Yes, it's possible. Or your smell is familiar to them. You can easily gain their trust as they're kittens, with food and daily interactions.>>3878320
My cat at night wants to go out in the hallway, sometimes he stays less than a minute and goes back, then a few minutes later he's in front of the door again, I opne, and comes back inside one minute later.
I suspect this weird habit could be because they don't want to see the door closed. They want free access to all rooms or to the outside whenever they want.>>3878323
Yeah, doesn't sound like a bad plan. Remember to do things gradually, step by step. Let them be the first to approach you, even when you're going to touch them if they let you.
With cats that are already adults and super wary it is going to be hard, I wish you good luck. Also place a bowl of water next to the food. They'll appreciate. >>3878406
I've always fed kittens kitten and baby cat formulas, just not blatantly commercial/cheap brands. Follow the package's instructions to know at what age switching to adult cat food is recommended. It is better to give them meat-based food and not fish (especially tuna, it contains high levels of heavy metals), because it's what cats hunt in nature.
As for the litter, when you notice that they're going to pee or poop, place them yourself inside the box. Every time they successfully use them, reward them with a kibble or a snack. Stop when they achieve 100%.
Cats don't need to be bathed, unless they are particularly dirty or have to be bathed to kill fleas/ticks with specific shampoos.
Those are my tips, I'm not an expert. Hear a vet if you have any doubt especially about their diet.>>3878542
Your cat has the expression of a wise ands gentle parent.