Two months is not a long time in this world, and most cats at two months old are not well trained at all.
Plus I wouldn't consider a cat drinking water to be any part of training. Chances are he never got to see the momcat take water from a bowl and so he doesn't know that he should.
You can invest in a water fountain for cats, most cats are drawn to running water. Or you can buy some colored aquarium rocks and rinse them really well and then put them in the bottom of a glass bowl with a shallow edge. Then fill the bowl up with water. Try getting some large jar lids, washing them out well and setting those around the house with water in them.
You can also float ice cubes or toys in the water bowl to encourage this kitten to play and drink.
Don't force his head into his water, water has no smell and the only thing that is going to do is confuse and scare him. You can dribble sardine oil or tuna juice into the water, and until he figures out that water is beneficial for him, simply add water to his canned food
. Don't feed him dry until you know he is drinking on his own. Also be sure whatever container you use for water is low to the ground and doesn't bump his whiskers. Young kittens get confused when their whiskers get smushed, and they think the opening you have provided isn't big enough. The jar lids work really well because their whiskers don't even touch the sides of the jar lid because it is so low to the floor.
I forgot, you can also add some KMR kitty milk replacer to the water to make a watery milk substance and see if he goes for that.