They don't want their milk anymore?

Okay, babies will be aprox. 5 weeks tomorrow. I started wet food last week, starting out at once a day and now am up to 3-4 times a day. Yesterday they only had 4 bottles. Today they've had 2 and didn't even finish the second one. I've been putting the leftover formula from their bottles in with their wet food and they've been eating that but won't drink it from a dish yet.
Is it okay for them to be off the bottle so soon? They all have nice round bellies and are peeing and pooping just fine.
Any advice?
BTW, they show NO interest in their dry kitten food so I've bene mixing that in with their food as well.

It sounds like they want to be weaned.
As long as they are doing all the things kittens should be doing peeing/pooping/eating/drinking/gaining weight/playing I don't think you need to worry.
I'd leave dry food out for them to eat whenever they want and mix the milk in with their wet food for a few feedings a day.

Yay for no more late night feedings!!

Devlyn