One thing i did, which was quite helpful, was i kept a list of things to get, which i added to as i browsed the forum. I listed absolutly everything under the sun that i could possibly think of, and then some more.
Then, i went thru it again, and thought more critically about items, and if i really needed them, or just wanted them. Not everything is necessary, esp if you read some of the threads on what peoples brought, but didnt need. But, everyone is different.
Then each week, it is my target to get 2 or 3 of the items of the list, so that hopefully, by the time i finish work, i will have everything that i need. And, fingers crossed, havent forgotten anything. I even included things i needed for me, in terms of jammies, sock, etc for hospital, and breast pads.
I did the same (and made sure to include things I needed like undies for hospital, new gel heat pack etc) and found it a god send. It also made it really easy when people said "what can I buy you?". I just crossed things off as I got them. I also found it really helpful (and less of an impact on the bank account) to buy a little wach week - especially things like dummies, pads, nappies...