Was gonna ask the spay/neuter question too
Ok you are feeding them twice a day - that is good - they can't "free feed". What are you feeding - dry or canned?
If canned food your solution is an easy one. Give them their portion on separate plates/bowls and put them in separate rooms to eat. When they are done eating, then let them out.
Now if you are feeding dry, you have a challange cause cats don't eat all the dry at once.
Maybe it would be better to give them canned and a portion and pick up after eating - if separated, they can't eat each other's food.
Ok you are feeding them twice a day - that is good - they can't "free feed". What are you feeding - dry or canned?
If canned food your solution is an easy one. Give them their portion on separate plates/bowls and put them in separate rooms to eat. When they are done eating, then let them out.
Now if you are feeding dry, you have a challange cause cats don't eat all the dry at once.
Maybe it would be better to give them canned and a portion and pick up after eating - if separated, they can't eat each other's food.