My DS won't take a bottle (we've tried everything!) so I'm looking at trying him with a cup for my expressed milk when he's 6 months old, or when he's able to sit up/ready for solids, so that my partner can help with feeds. It'll likely just be 2 or 3 times a week that it'll be used. Can anyone suggest a cup that would be good for this age? I wasn't sure if an open cup or straw cup would be better. Or is that age still too early? (Happy to wait and continue to breastfeed if too early still, I don't want to force or rush anything, but thought if it's possible at this age it would help a lot) Thank you!