Our little guy is 15 weeks, 14 pounds and is sleeping maybe a 3 hour stretch at first and then up every 2-2-5 hours. Sometimes with 1 hr stretches! It's rough! Waiting to start until we have the go ahead from our pediatrician but would love any advice! We do a nighttime routine but he still cries when we try to put him down. It's a whole process and we usually go back in a few times. We start around 7 and he doesn't usually go down until after 9. We've tried putting him down earlier but he'll still wake up 2 hours later. 

Thanks for your advice mamas!!