Am I feeding them enough?

I recently stopped feeding my cats dry food altogether. My two girls are now eating only wet food.

Soren eats wet food with whole mice.

I start off the day by giving them all half of a 13.5 oz can to share. When they finish, a bit later I give them the rest of that can. Then at night I give them a 5.5 oz can to share, but Soren doesn't eat much of it since he gets two young adult mice.

Should I be feeding them more?

Yes, that should be enough unless you're using a very low-calorie food like Weruva. It averages out to 6.23 ounces each (usually the big cans are 13.2 + 5.5 divided by 3), and then Soren is getting some calories from another source so the real average is even more. Most spayed/neutered adult indoor cats will need 5-6 ounces of canned food (of course depending on the caloric density of the food) a day. So if any of yours are chubby you may even want to cut back a little after they get used to this feeding schedule/method.