I tried the Hansa Breath Method. It means that each time you feel like you are losing concentration, you take a fast sniffing breath, but not too big breath and not too small of a breath. This was supposed to keep me aware, and once again I have only tried it one night so I can't make any conclusions. However this night I just clicked out.
Although I am thinking since it is really difficult to find a way to mantain awareness upon bedtime, since your mind is really exhausted.

If I manage to do it even once, then that method is suitable for me and effective in itself.

Right now I just want to cycle through different ways of doing it to see what suits me best.

The anchors I have used so far are: Day dreams, Awareness of the breath and tonight I will try to use audio and use listening awareness as my anchor.