DD1 is still having a bottle in the morning and is 22 months. she really cried this morning when we offered her milk in a cup. would ideally like her to be off the bottle when DD2 arrives in May. the dr browns bottles we have are starting to look a bit misty & old now though... I planned on buying new treats but for the price of the bottles I'd rather not buy all new for DD2. would you just use the old ones? I guess if they're sterile it won't be a problem???