Best diet and feeding schedule for my 9 month old kitten?

I am somewhat of a new cat mama to a 9 month old female Russian Blue kitten named River. I got her at about 4 1/2 months old and since I have had her she has been on a mostly canned diet. As of recently, I have been feeding her canned food, Weruva, twice daily (9 AM and 9 PM). I have also been giving her just a little bit of dry food, Natural Choice, during the day. After visiting my local natural pet food store, I am now switching her from Natural Choice to Orijen grain-free Cat & Kitten dry food. The natural pet food store also recommended trying to convert her to a raw diet, which I don't know enough about quite yet, they gave me a few samples to try. River has a sensitive stomach when it comes to food changes. I have a pet fountain for her as well as a couple other water sources around the house to encourage her to drink water, as I know cats have a low thirst drive and it is important for them to remain hydrated. I am trying to figure out the best diet and feeding schedule for my cat and since I am somewhat of a new cat mama, I am open to any suggestions or tips you may have. Thanks in advance!

A raw diet is great but definitely read more about it before you start The Raw Food forum has a couple links near the top with more info: http://www.thecatsite.com/f/65/raw-amp-home-cooked-cat-food Usually it's easiest to feed commercial raw pet food first, such as Nature's Variety Instinct Raw Bites.

Catinfo.org is a great place for more info on cat nutrition in general. Most people here recommend canned or raw food. Dry food can be fed, preferably as a very small part of the cat's diet, but some people here do feed only dry food. How much dry food are you leaving out during the day? Make sure to add water to the canned food to ensure good hydration. Start with a spoonful or two and increase it if your cat will tolerate it. Some cats will eat soup

A few small meals every day should be fine for your cat. Since  you have dry food out during the day, you can feed canned for breakfast and dinner. One of my cats is fed 3 times a day and the other one twice a day ( I feed raw).

I will definitely look and read well into a raw diet before giving it a try with her. 

I am currently feeding her anywhere between 1/8 to 1/4 of a cup a day, so not very much at all. Once I get her completely transitioned over to the Orijen it will hopefully only be 1/8 of a cup a day since the Orijen is much more rich and filling than the Natural Choice. The wet food I feed her is usually anything from Weruva, I give her Tiki Cat most often and occasionally BFF, but not BFF very often since most of the recipes are heavy in fish and I have read too much fish for a cat isn't good. I usually add 1-2 tablespoons of warm water to her wet food, both in the morning and at night and she doesn't seem to mind the added water at all. 

After doing some more research on raw, I would preferably like to work at least some raw into her diet if she is able to tolerate it well. 

I am also curious about how much I should be feeding River. Currently I have been giving her 1/3 of a 3 oz. can of her wet food with some water added twice daily and then about 1/4 of a cup of her dry food to nibble on daily. She weighs 8.3 lbs. Since she is a kitten still, could she be eating more? I don't want to over feed her and create a weight problem.

3 times a day is a good amount for kittens, free feeding is also a good option but it is hard to transition them out if it once they are no longer a kitten the back of the package should have some measurements for feeding amounts, it will probably vary by weight or age