> Just wondering if anyone had any tips or whether she will grow out of it? Whenever we come home or downstairs we don't fuss over her/ ignore her for at least 10-15 mins
As others have said - go back to treating her as if she is a very young puppy. She'll need time to settle in and learn your routines but you can't expect too much too soon.
With new puppies you'll find that many of us will advocate taking your pup upstairs to sleep in a crate beside you for a few weeks. You can provide comfort by dropping a hand into the crate or quietly shushing your pup when needs be, you'll teach it that lights out means bed time AND just as importantly your pup can teach you the difference between the "I'm a bit bored" type of whinging and the "Uh oh! Quick I need a pee now" sort of noises :)
Normally, by 7 months, a puppy that has lived with you from the beginning will be downstairs and sleeping right through the night BUT your puppy will probably regress a bit due to the change in home. Remember that everything will feel, sound and smell very different to her and she'll need you to be patient whilst you teach her what behaviours you want from her. If you don't want her to sleep upstairs with you then I'd suggest you find a way to stay with her til she is asleep OR sleep next to her for a while.
Also regarding the ignoring, I understand what you mean. You don't want a big greeting and hello every single time you come back into the room (you might have just been to the fridge) however ignoring for 10 or minutes isn't right either. I'd suggest that you spend a lot of time just walking through your own house opening and closing doors behind you - sometimes she'll follow, other times just shut the door on her and open it again almost immediately, before she gets a chance to draw breath. After a while she'll get bored following you and she'll realise that a closed door doesn't actually mean very much either. In addition to that go and hang about in her room with her til she nods off. Puppies of 7 months sleep much less than younger puppies but she will still follow a pattern of eat, play, train, and snooze that you'll soon start to plan and predict. My dogs sleep in the utility room so I'd often shuffle laundry, clean cupboards or just take a chair and a book whilst I waited for my pups to fall asleep. Once they're snoozing they rarely notice you've left :)
When you do return after a longer absence you
should greet your dog but it needn't be a full on looney dance. I tend to just say a quiet good morning, hello handsome etc (most of it too soppy to repeat!!) but then we go straight outside (rain or shine) and they say a bigger hello once they've had a pee, or a stretch, or a run about the garden. As they get older they are less likely to be busting for a pee but we've all got into the habit of going straight outside and there's comfort in routine...
Hope this helps