As most of the other posters have said, a good option is to go either disposables or terry flats or prefolds for the first part, then move onto something else when the baby gets a bit bigger and their legs fatten up a bit!

I was planning to do this (with disposables) but found the Bumgenius OSFM I had worked fine from the day after we got out of hospital. The fit wasn't great but I think I was lucky in that she never did anything bad enough that it wasn't 'contained' even though there was a bit of a gap around the legs. I've since bought some Rumparooz (quite similar to Bumgenius) and they are rated from 6lbs to toilet training so in theory a nappy you really can use the whole time.

So I guess if you have some OSFM in the house you could give them a bash then if they aren't doing the job have a plan B ready.

For the first couple months I used flushable liners in the nappies which meant the scary newborn poos were easy to deal with and the nappies don't cop quite so much poop! It might be worth looking into these and seeing whether they will be an option for you.

No. of changes - a general rule is about 10 changes a day. I think we always did a bit less cause we would do a change with each feed and my girl did 4 hourly feeds and only a few stretches shorter than that so our feeds/changes didn't often hit double figures but this obviously changes a lot from baby to baby. Now we can go 8-9 hours overnight without leaks.

HTH