im going to make a suggestion.. for the next hatch.. do everything like you have been.. but for lockdown add another dish of water and have a very wet sponge sticking out of it (basically you need to increase the water's surface area to increase the humidity). also .. do you have a hygrometer and has it been calibrated?.. if not.. get one and calibrate it to make sure it's accurate.. then when you add that extra dish of water with sponge.. see how high it goes.. the higher during lockdown the better for now...