My almost 4 week old will normally sleep for at least an hour at night once I have put him down and will sometimes go longer. However, the last 2 nights he is waking up after 5 minutes. He is not crying right away but is making lots of noises, moving a lot and is generally wide awake. He isn't hungry and will fall asleep if held or offered food. Any advice?!
There have been no changes to routine, feeding, room etc