My LO is almost 9 weeks but regardless of how they go to nap - self settle, car, sling, pram etc - they will not nap for longer than 45 mins at a time. I know they wake because it’s one sleep cycle but is this ok? I read that anything less than one hour isn’t restorative. By the end of the day my LO is screaming with tiredness but I just can’t seem to lengthen the nap…they can self settle but just won’t go back to sleep after 45 mins - I’ve tried white noise, swaddle, dark room etc…