10 weeks old is very young to expect it. Unless you suscribe to the Gina Ford routine methods, or what ever they are called < shudder>
You have a baby that sleeps all night at 10 weeks! count your blessings lovely, honestly!
I'm not being nasty, at all by the way. You really don't appreciate quite how lucky you really are
My dd was exclusively BF and woke every 2 hours if lucky she'd go for 3 hours, until she was early a year old!
Sleeping in the day is a more realistic thing to want to maybe get 'sorted' out, but making or trying to get a 10wk old baby to sleep from 7pm is really unrealistic and a little unfair on her actually.
If you can manage to get some day time naps into her routine, then you might find, ironically, that she sleeps more in the eve and night. It was not until my dd was having proper naps ( at 10 months, she started to have 2 regular naps every day) then she started getting closer to sleeping all night.
I did always put her down to bed at the same time every night, from very early on, but, I didn't stress or leave her if she didn't want to fall asleep.
The best way, if you really must try at 10 weeks old, is get a good routine, and stick with it. She will eventually associate it with sleep, and see it as sleep cues.
Warm bath, followed by cuddle, quite time, reading ( yes, I read to dd even at that age. she liked to listen to me, lying on the bed reading) darken room, feed... tuck into bed, leave the room. even if you end up going back, if you do this every evening you might find it starts to make a little difference.
I'd say though the key will be to getting naps in the day- where ever they occur, in the pram whilst walking, or in the car, or even in her bed at home.
I think also you and DH need to re evaluate things a little. Of course you need time alone together, but when you are new parents, its not on the radar, honestly. Its part of having a new baby.
Its lovely, important treasured and special times you will spend as a family. You can't get them back.. Maybe look at it that way, and it will not be so important that she's out of the way, asleep... trust me, i do know how you feel, but these early days go by SO quickly. You'll look back and wish you'd not been so insistent in it, and wasting energy on it so young.
I'd love to have my little baby here now, in the evening, not being able to shout at me, pull my hair, throw things, etc.... just lying on a cushion, or on my shoulder, or something nice like that... < wistful emoticon >