How To Make Screen GUI Appear When Touching Object And Then Disappear After 2.5 Seconds?

So Basically I Want My Screen GUI To Disappear After The Wait Time. It Works Only Once Then Stops. I Am Not Sure How To Fix This. Here Is My Current Script RN.

local db = false

script.Parent.Touched:Connect(function(hit)
	if not db then
		db = true
		local plr = game.Players:GetPlayerFromCharacter(hit.Parent)
		local h = hit.Parent:FindFirstChild("Humanoid")
		if plr and h then
			if plr.leaderstats.Endurance.Value < 250 then
				script.AcidGui:Clone().Parent = plr.PlayerGui 
				wait(2.5)
				plr.PlayerGui.AcidGui.Enabled = false
			end
		end
		wait(2.5)
		db = false		
	end
end)