Ooh, my name in a thread title...
Am currently trying to coax nearly-5-month old to use spouts, actually, so I can work again. I have had to re-read all the "getting baby to take a bottle" threads. We'll make a real effort at it this weekend, because I'll be away from baby for 4 hours or so next Monday.
As it is, what I'm doing is taking him to childminder, after 2-3 hours coming back to feed him, going back to work for another 2-3 hours.
The only real hassle with this (CM lives 5 minutes away) is that she also has my 3yo for the day. I have to hide from 3yo when feeding the baby or she'd flip out & want to come home early. If 3yo wasn't such a pain I'd love to long-term just pop over & feed the baby when needed, and not bother with expressing at all, because expressing/sterilising/freezing/etc. is a chore.
I think it gets a lot easier when they are already on solids. My other babes were on solids by 16-17 weeks, but I'm being a good girl this time and will hold off until 6 months unless the baby manages to grab something off my plate, first. Baby being on solids is a psychological reassurance means you just know that there's a backup if you didn't send in enough milk, or if you are only able to express a bit less than usual, etc.
BTW, I would think at 5 months, no solids, baby would take 10-16 oz in an 8 hour period, if that's any help to you.