@Pinky - I also wasn't sure what to do when it came to espressing. I'm still not sure if I'm doing it right. I espressed after each feed to make up the first bottle. It took a couple of feeds to get up to 160ml. The pead said Luke would drink about 100-150ml so I espressed till I had 160ml. I was only able to espress about 40mls after each feed as Luke would suck my boobs almost dry!
Now hubby feeds him the bottle while I espress the bottle for the next day. Yesterday I managed 160ml in one go, but tonight I only mananged 100ml so will need to espress again after his feed now.
I must say it takes me a lot longer to espress milk than it takes to feed Luke off the breast, think it took me about 45min to espress 160ml. Its almost anoying how long it takes! Let me know if it also takes you that long, would like to know.
You will be able to tell when your boobs have had enough espressing as the milk won't come out. I find if I stop for a bit and carry on then it squirts again.
Good Luck with it