Let Go shows a concerned turtle (there is a concerned bear up ahead, too).
There are only 2 clouds this time (not 2 and 3). Concerned turtle is “holding the light”. Maybe he thinks the tide will come in – or maybe that’s a big wave?
Turtles can live in both realities (land and ocean). Must be about the candle!
He’s got a checkerboard reality-grid-shell holding the light. Maybe he is creating a new reality from holding the light, and he is concerned about the dangers that might kill the light?
Turtles are slow but steadily win races. They are not typically depicted as fearful, but rather old and wise.
I guess the turtle needs to let go of the fear and just hold the light.