i remember reading somewhere that babies should not use a bottle after 12mo. my dd uses a tommy tippee for water during the day and at meal times but still has a morning and evening botle of formula from a bottle. any ideas what i could use instead? i've tried all the various cups with valves as well as the avent magic cups but she cant manage them. she will drink a bit from a doidy but not when she is tired ( nightime) or desperately thirsty (first thing).