I'll give the blue liner at the back a go.

And I will get someone to help me with attaching it, as it is hard to see the exact position at the back.

However, if this lifts after I sleep, I'm not sure wearing will be for me.

I can't afford to be worrying every day whether when I wake up, if the back will have lifted. I have pushed it down lately as I have had no committments lately, but when I start work in a bit over a month, I can't afford to go to work with the stress of worrying whether the piece is down at the back or not.