Introducing the bottle

[Summertime]

Hello,

I would like to start introducing the bottle to my 5 1/2 month old DD. I will only need her to take it once at the end of this month for a party and once in Dec for a concert I am going to. It would also be ncie to go on a date night with DH at some stage too. I will express while I am away from her, and I will be giving her EBM in the bottle.

So I have a few questions -

How do I go about introducing the bottle?
Should I try once a day?
Once she takes the bottle should I make sure she has one a day so doesnt 'forget' how to drink from one?
Should I try a sippy cup instead (if so, which one? the ones I have the milk doesnt drip out at all, needs that sucking motion).
What is the best time of day to try?
And should I do it before or after feeds, or in between breasts (DD takes both in one feeding)?
Is it all too much with starting solids as well? (We have started, sweet potato, Farex and pear but DD is not keen on eating, just spits it out)

Thanks very much for the help and advice!