The cakes are multiply-ing by the second. what do i do?

--Script
while true do
    wait(3)
    local SmallCake = script.Parent
    local clonedSmall = SmallCake:Clone()
    clonedSmall.Parent = game.Workspace.Cakes.ClonedCakes
    clonedSmall.Position = Vector3.new(-280.727, 831.309, -232.018) -- Where the cake will spawn

end

This is a script I made. So if i 'Play', or 'Run', this will create cakes falling out from the stove. But each time, the cakes get multiplied and I just waited like 30 sec but about 100 cakes are coming out on the stove every 3 sec! help me. *Supposed to come 1 cake in 3 sec

local sec = 'second' :D