disable a script only runs ween player added?

game:GetService("Players").PlayerAdded:connect(function(player)
    while true do
        wait(5)
        lessons=math.random(1,5)
            if lessons == 1 then
            --swimming
            game:WaitForChild("ServerStorage").Lessons:clone().Parent = player.PlayerGui
            player.PlayerGuiLessons.Swimming.Visible = true
        wait(60)    
        end
    end
end)

i need to be able to disable this script but the code only runs ween player join plz help Edit https://scriptinghelpers.org/questions/33194/script-execute-at-a-specific-ingame-time i write this before Edit i want to disable this script from another script ween ingame time is 16:00:00 and enable ween its 08:00:00 but the script only runs ween PlayerAdded and the PlayerAdded is needed to find the player becuse it has to be a serverscript