A can a day seems a bit much to me. We did half a can a day for 15lb cat (not fat, just big).

You can probably eliminate the wet food entirely if you pour extra “juice” from your meals onto the dry food.

I’ve always kept a bowl of watsr and dry food filled and then given them wet food once a day.

Never had any issues with them throwing up. Hopefully, someone else can provide insight into that.