Changing Junior's sleep habits

We're trying something different with Junior's sleeping routine.  We weren't having trouble keeping him asleep, but it was becoming more and more difficult getting him to sleep.  It would take anywhere from 1-1.5 hours to put him down for the night.  We did some reading, and we came to the conclusion that we were putting him to sleep too late.  Apparently most babies naturally want to rest for the night between 6-7, and of course an over-tired baby is more difficult to put to sleep.  So instead of starting to try to put him to sleep at 8 or 8:30, we moved it up to 7-7:30 with a "bedtime routine" starting at 6:30.   We're also trying to avoid holding and bouncing him to sleep as much as possible.   So far we've seen pretty decent improvements.  Last night he went to sleep by 7:30 without too much trouble, and woke up once to eat.  It's only been few days since we started this strategy, so we'll need more time to tell if it's working consistently.  Keep your fingers crossed...