Waalaikum assalam sis, I totally understand your panic, a few of us went through this exact thing when we had to go back to work! Honestly, sometimes babies develop a preference once they've had direct latching for a while, so it's not always about the bottle brand itself. Have you tried expressing into a cup or spoon feeding instead? One of my mum friends skipped the bottle altogether at that age and just did cup feeding at nursery, then direct when baby was with her, worked like magic for them because it kept the latch consistent. If you do want to push the bottle route, try asking your babysitter or someone else to offer it (babies sometimes reject the bottle from mum because they can smell the milk!), and maybe experiment with feeding at different times or when baby's not hungry yet so there's less pressure. Since you're going back soon, I'd suggest giving yourself a good 2-3 weeks to figure out what works, don't stress too much if the Avent isn't the one, but honestly many babies are just stubborn about it at 2 months regardless of brand. You'll sort it!