This requires you use a very precise wall clip through the door that leads to Lux Lirata. Firstly, Align yourself with the door so you are at the rightmost point while being grounded on the bottom gravity. Then you must jump and, at the apex of the jump, go into your shell (press down) and hold right. The frame that you see Snaily clip into the door is when you release down. Doing these exact steps will cause Snaily to clip through the door and into Lux Lirata, thus saving a maximum of 35 seconds.

Go to 3:34 here to see the clip in action: