Usually the rule of thumb with kittens is to feed several times a day, small amounts (tiny tummies) but as much as they want. This is what I've noticed on several canned foods (not specifically Weruva) under the feeding guidelines.
I agree about looking into feeding some other, more caloric, foods along with Weruva. Weruva has lots of good foods but -- in addition to the calorie question -- it's good to introduce multiple brands, protein sources, and textures. (We feed some Weruva to our active, young adult cats, though mostly from Cats in the Kitchen, which are a little higher in calories but have gums.) Lots of cats (including our two) are choosy about their foods and demand quite a bit of variety, which can be a challenge, so it's great to get them used to different kinds of foods early on.
