Good luck feekerry!
Definitely agree with others on here. Get your bf established first and then express and give a bottle.
But at the same time, (IMO) ensure you do offer a bottle of expressed milk once it is established.
I see and speak to so many people that didn't offer a bottle at that 4-10 week mark (mostly because bf'ing was working, going great and expressing /sterilizing was a PITA etc) and then later down the line, baby won't except anything but breast- which becomes problematic for the odd hour off or night out etc.
I expressed early on as my supply was leaking everywhere fab and then I got mastitis due to latching issues from dd's tongue-tie. So around week 4 we introduced a bottle (same reasons as u) and she took it. I'd express about 8ish each night and dp would give the next feed after then. Around week 6 or 7 (so only 2 weeks later) dp wasn't that fussed on "bonding session" as he was doing lots of other things and I was finding expressing/sterilising a ball ache, so we stopped, thinking, oh well she knows how to take a bottle.
Boy were we wrong! Fast forward only 2 and a half weeks later and we had a wedding to go to, tried her on bottle 2 nights before- refused it. Kept trying, still refused, ended taking her to wedding. Following week, I get news that I needed to go an have an operation in day surgery due to retained placenta. We'd been trying her daily but to no avail. I postponed op until after a holiday and dp tried every day whilst away, still wouldn't take it! By now she was 12 weeks. The day before my op, she took it, thank god (we'd been planning to cup feed her whilst I was gone).
So, point of my long winded story (sorry
) try and introduce bottle once bf is established and then, don't stop! Since week 11 we've done a bottle every two or three days so that DD doesn't forget!
All the best with birth 