Developmental growth spurts?

kellelle01

I remember reading a while ago that when babies hit major developmental milestones like crawling, they can experience the same things they did when they grow physically.  For example, they stop sleeping through the night, they eat more, etc.

DS started crawling a week or so ago and this week for the past 3 nights, he has woken up like clockwork around 3:30-4am.  He cries until he's fed.  He'll go right back to sleep afterwards.  I'm just trying to figure out if this could be a growth spurt (developmentally or physically), teething, or just something we're going to have to suffer through.  He's been a great sleeper thus far and I'd hate to have to start sleep training now!  Advice?