We alternate two batches with coconut milk and then go back to raw milk for a batch to give them a rest. My milk grains are two years old now and doing well. The beverage that is created is creamy and thick. Only had luck with the rich canned coconut milk, not the stuff in the carton. Also have water grains but make them with water, lemon, figs, sugar, not coconut water, not a big fan of the taste once kefir has been created.
You'll never see the light if you're in someone else's shadow, or said another way, life is like a dog sled team, if you're not the lead dog, the scenery never changes