E was 6 months (not on bw)
C was 5 mths witha df, 6 mths without df but just to let you know they do regress during first year, he is now waking at 5 am since 4 days ago, no idea why, seems to be developmental? (crawling, teething, standing etc...) they just sleep though when they are ready, though a good routine is a good start!