C.B.
I used dr. Ferber's book called something like "how to solve your child's sleep problems" when my kids were little. Sometimes solutions are counter-intuitive: I used to "top off" my kids with as much nursing as possible around midnight but that just meant their tummies were busy for hours and woke them back up. After age 6 months for most kids (depending on weight actually but I do not recall the weight) kids can sleep through the night but habits keeps them waking up. With my 1st child I let her "cry it out" which took 4 nights of me not going in to feed her at 2 AM and her crying for 4 hours straight and then she slept through from 11 to 5. With the 2nd I used Ferber's much more gentle method of going in at progressive longer intervals and not feeding. That took 2 weeks but felt better to me. However, now at 13 and 10 they have no recolletion of it and if I were to do it again I would use the crying it out method since it works so much faster. You may also want to only offer him a bottle of water (better of teeth too) since he may just be thirstry or decide not to wake up for only water after while. Good luck.