Wake windows


My little guy turned 5 months old on Christmas. I have been following taking cara babies sleep program since he was a newborn. If anyone’s heard of this, you know about wake windows. My son does sleep through the night (very solidly). But Im still struggling to keep him awake during the day for more than 2 hours at a time. Is this normal? He should be able to be awake for 2 1/2-3 hours at a time. If I even try to push it to that, he becomes an overtired, cranky mess. I’m okay with how much he loves to nap, but I guess as a first time mom I’m wondering if it’s normal for a baby to be this tired all of the time.