First and foremost, be patient and wait. Eventually they will get the idea that it is a good thing to drink from your water bowl. Next, give them lots of treats while you are doing this — little bits of food on their chin or in their mouth always works well! Also have plenty of fresh water available for them to drink at all times so they won’t even need to come near your bowl. If necessary, offer cat nip or some sort of treat-treat combination when drinking water can provide extra incentive for any kitten who doesn’t recognize the reward yet!
How do I train my 2 cats not to pee outside?