Re: returning to work, so overwhelmed!
1. the amount of freezer stash is, honestly, more about your personality than anything else. i wanted everything under control and planned out, pumped way ahead, and ended up donating 500 oz. that's a lot of extra pumping time! my friend, who had a younger baby in daycare more hours, keeps like 1-2 bottles worth. all you really NEED is enough for tomorrow. think about what will help you feel more settled and prepared. but also keep in mind the shelf life of your frozen milk; don't need to pump so much it'll go bad before it's used.
2. if you want to pump, you'll want to be extra careful not to exacerbate your os/oald. maybe start off wtih just 5 mins or something right after a feed.
3. most of the "experts" i read said 10-15 mins, but seems like most of the real people on here (myself included) pumped longer. i learned through trial & error that i got a first letdown around 5 mins in and a second around 23 mins in - so i pumped for 26.
5. no. you can throw all the parts in the fridge for a whole day and just wash once. hot soapy water or the dishwasher.
6. depends partly on how much you need and your production. but every 3 hours is a good ballpark. you don't want to go too long, even if you're getting enough, and risk mastitis.
7. no more than 3 oz bottles. and plan for 1-1.5 oz per hour. this might be less than daycare thinks she needs but they often overfeed; someone will hopefully come post some links to kellymom articles on bottlefeeding the bf baby.
Nursing, pumping, cloth-diapering, babywearing, working professor mama with the awesomest SAHD ever.