Hi there, I would say it's worth a shot if the wakings are habitual now and there is no indicative reason i.e. routine tweak needed, or teething, illness, etc.
What does he do when he wakes? Is he happy and playful or cranky?
It might be worthwhile to post on the EASY board as you may need to tweak your routine a bit. At that age it's usually the root cause of EW or NW.