DS is 7.5 months. Two months ago we sleep trained and for awhile DS was STTN from about 7pm-6am. Life was awesome. A few weeks ago DS started waking between 4 and 5am and not going back to sleep. I nurse him (probably starting a bad habit) and he falls back to sleep right away, waking about 1.5-2 hours later. Life is still good, but I'd love to eliminate this 4am feed. How do I do it? CIO? Anyone have tips or specific advice? Much appreciated ...