We found a new spill-proof sippy cup that we really like! Try the Munchkin 10oz Mighty Grip cup!

We've been battling making the move from bottles to sippy cups with our girls.  They both love to have a bottle before their naps and bedtime.  We've tried several different cups and straw cups which they enjoy playing with and only taking a few sips from.  Right now the best cups that are working for our girls are the Munchkin 10oz mighty grip cups!  We had the straw style in this brand but we're really liking the cup style with the silicone spout that is really similar to a bottle.  Also, the girls like to tilt the cups up to their mouth like they would have for a bottle so the straw style isn't working well for us anymore.  If you are struggling with making the switch from bottles to cups, give these ones a try!  

Munchkin 10 Oz Mighty Grip Spill-Proof Cup - 2 Pack

Making the switch from Formula to Whole Milk Tips...

We did move to cups AFTER we switched our girls to whole milk.  We also waited until their adjusted age of one since they were preemie babies to make the milk switch.  In order to make the switch successfully from formula to whole milk, we gradually introduced whole milk into their bottles to adjust their digestive system.  We started with 1/4 milk with 3/4 formula, then 50% each, then 75% milk and 25% formula for like 3 to 5 days each.  This phase switching worked well for us.  When we did try to just switch to whole milk ("cold turkey") via a whole bottle of cows milk instead of formula one day we ended up with projectile vomit back at us!  Ask your pediatrician for recommendations that are right for your kiddo.  This was just our experience and tips of what ended up working for us.