Ah, yes. WILD tutorials. There’s a few things about WILD you need to understand, mainly that it varies from person to person. The guides give you a general idea of what to do but nothing is set in stone. For one, you don’t need to lay on your back, though this can help inducing SP. For your WBTB, you might try to not get out of bed and immediately try the WILD tech. This can help speed the process up, or you might even be able to do a DEILD. For more info on how to adapt WILD to your own needs, check out this article I wrote a while back. It’s more or less the advice I’d give now.