Does anyone Have any good advice or suggestions to establish good sleeping habits. As in getting a baby to sleep through the night?  We were very strict with our last two and did bedtime the same way at the same time each night. But it didn't seem to help. I think my last baby wasn't consistently sleeping through the night until 15-18 months. Then I see my friends kids who start sleeping through around 3-4 months and I feel like I must be doing something wrong.