Hi all. Need some advice. My 4 month old DD is in most ways a delightful baby, but she won't sleep at night more that 2 hours at a stretch. She was going for 5-7 hours but once she was 3.5 months it all went away. I am having some health issues and very high blood pressure and both her doctor and mine have recommended that we sleep train her via controlled crying. I used this method to perfect success with my older DD when she was 7 months. Do I do anything differently this time because she is 4 months? Any other tips??