Help with cats howling all night and not letting us sleep.

My two cats are going to be 16 in November. They are sisters and are generally in really good health. Nenya takes medication for hyperthyroidism and an antiinflammatory. Vilya is in good shape and they're both a little playful when in the mood, eat well, and don't have trouble getting around. The problem is they've taken to howling all night. First it was Nenya, who has always slept with me walking up with a loud meow every time.i shift in my sleep. Now Vilya has taken to howling at the bottom of the stairs with those, deep, booming, heart wrenching gowns then she runs upstairs howling and it takes a while to get her to stop. If we close the door they both howl outside the door. We don't have anywhere in the house to lock them up for the night. Their vet has recommended various drug treatments for arthritis and other ills, but they've come to nothing, blood work is fine and the cats just get more persistent in their howling. We haven't slept through the night in weeks. Any suggestions from cat lovers out there for a pair of old kitties who have gotten louder?

smell mouth

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Fourchette says helooo

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