Our DS is 5 months old and has absolutely no routine. He mostly catnaps for 40 minutes during the day but can occasionally go up to 1 1/2 hours. My concern is that he does this at completely different times each day. He doesn't go down at around the same time each day. A part of this is that it's such a struggle to get him to sleep and sometimes he's so stubborn, I give up. I could spend a great deal of my day trying to get him to sleep at the same time I suppose but wonder if it's worth it. Should they have a routine at this age? He only just turned 5 months yesterday.