It takes about 4 days to see a difference in sleep when increasing A times, and even then you are going to see a difference only if now it's enough for him and he doesn't need another increase.
What is his A time now? And how long are naps?
If he settles when he wakes at 3AM I consider it pretty good. I know that you wake up yourself, but try and not go to him and go back to sleep. This is maybe something you will need to teach yourself as well
![Tongue :P](https://smiley.babywhispererforums.com/Smileys/classic/tongue.gif)
Ha-ha, sleep training the parent! Don't think that's what Tracey had in mind, lol. But these things often pass after a while and perhaps the A tweaking will make it happen even sooner than it would otherwise.