Almost Three Months - State of the Baby

The adventures in sleeping unswaddled continue.  Last night was awful.  He woke up every hour.  Not sure if this is because of a sleep / warmth / comfort issue or if he really was hungry every time (like he appeared to be) and is having another growth spurt.  Are these periods, growth spurts, are these real or in my head?  Because these periods of adjustment are not fun.  As we go from one stage to another.