Don't worry, keep trying. It's good that you fall asleep in the try instead of not being able to sleep.

Just keep trying, WILDing is not an easy thing. Read threads that teach you how to stay focused during relaxation. You won't get steps of how to do WILD from there but you will get the general idea, then it's yourself. YOU have to research what it's the best method that you can use. For example: you are trying to induce sleep paralysis (which is wrong to aim that) and you read on a post that counting to 100 is a good option however that doesn't work for you, it keeps you awake therefore you must search your own way.