lulu - I'm sorry to hear about your gran. May she RIP.
Nina goes to daycare twice a week. She's been going since she was about 6 months old as I was working part time then, and finished up a few months ago. She loves it, and it's fantastic to have some Nina-free time.
Sorry to hear you've had another awful day. It's hard when you're mourning the death of someone close to you at the same time.

laranna - I think that is a good start, considering your milk supply is still settling down (it takes about 6 weeks before your milk settles down). Just make sure it doesn't drain you too much though. As already mentioned, expressing is extremely exhausting. I expressed full time for 6 weeks when I went back to work when Nina was 6 months old. I was an absolute wreck from doing it though. And a good point you mention about nipple/bottle confusion. Saying all this though, I don't want to scare you off or anything. I know you need to do whatever you can so your little man can gain weight.