Ok, so after a bit of an 'off' day, I told DF that tonight we were starting a 'bedtime routine' and he had to be involved.

So at 9.30 this is what we did:
Very dim lights, nice calm, quiet house.
Nice deep warm bath.
Massage.
Wrap.
Nice snuggly feed.
Burp.
Snuggles and rocking with Daddy.
She settle in DF's arms, but didn't go to sleep, so I put her in her sling, and that is where she now is, asleep. I will leave her in there a little longer and try and put her in her bassinet.

DF came to the party tonight, and I voiced to him that I can't do this alone. He did bring up the fact that he works and is tired, but we didn't argue about it.
I said we were going to do this routine every night to get Seven used to it.
Cross your fingers!!!