R.H.
It might be harder due to the age difference. My daighter at the age of 6 months slept through the night till she was 7 months and we took an inpromptu trip out of state and started all over with her waking up at night. we moved her at the age of 6 months to her own crib and she fussed the first night a little then the second night a little less... by the third night she was settled. Her sleeping through the night took over a week to get settled she was 13 months and stubborn... she would wake up asking for milk. we finally said no she wasn't even drinking an ounce. So a week and 2 days later she was sleeping through the night too. I will warn you though... it was very hard to lay there and listen to her scream.