I really need some advice please. My nephew is 10 weeks old and already had trouble with his stomach, his milk was changed from cow and gate to cow and gate comfort 2 weeks ago and last week was put on soya based milk prescribed from the doctor and has become very constipated, his stools are literally solid and is obviously causing him much distress and pain trying to pass them. Does anyone have any tips on how we can ease this and make it a bit easier for him?