i find many lucid dreaming autosuggestion techniques and visualizations to be very calming and help with sleep in general, to stop my mind from racing about a million random topics.
the best time to try WILD is usually after youve already gotten 4 to 6 hours of sleep, because your REM cycles are longer. when you first go to sleep your REM cycles are very short so WILD doesnt work very well. many people find the WBTB method useful for this reason, but you might try WILDing if you wake up in the middle of the night and are feeling too alert to just fall back into normal sleep.
for when you first go to sleep, id recommend trying some autosuggestion or MILD techniques. you can start your intentions to lucid dream when you first go to bed, which will help later whether you WILD or not 