I don't want to jinx it, but DS has been asleep since BT for 50 minutes now!!! This is a FIRST for me, so you can imagine the thrill!

As suggested, I reduced A time and DS did 5 naps today, each 30 minutes long. I also put him to bed earlier... was sound asleep by 8:10PM. Although it's early to call it a victory, it seems that the advice was right on! Of course, 5 naps during the day is a lot, but hopefully his napping will get better too with time.
Martika: Thanks for your advice too! It will definitely be hard to wake up DS from a nap... I will feel like I am crazy since that is all I try to do: get him to nap well, but you're right... that is probably too long a nap and could back-fire. Why do you think they shouldn't sleep for more than 2 hours? Could they get their day and night sleep time confused?