My 6 month old DS has been using the tommee tippee soother for sleeping since birth. But these are only recommended for 0-6 months - they don't seem to have them for 6 months plus. I tried using a orthodontic soother for ages 6month plus, but he hasn't taken to it at all. Does anyone have any recommendations for a soother that is suitable for 6 months plus, which is similarly shaped to the tommee tippee cherry??