Hi Jordlwes, thanks for the reply. i will look at the link you sent me in a moment!
his attitude is normal i guess. he already has 4 hours a time between nap #1 and nap #2. but i'm not sure either if he's ready for more, and moreover if I'M ready for more!!
i'm pretty sure he's not overtired because in the last month i've tried to put him down a bit earlier to see if he'd go down, but it only came biting me in the butt! because he stayed up way past his actual nap time. i also tried to put him down a bit later, but didnt see any change in the length of his nap.
The only way to get a good long nap from him, is to have him with me in bed for nap time. that way i "catch" him on time when he wakes, and just get him back to sleep. if he's in his own bed, it's a 50% chance that i manage to put him back down when he wakes cranky. usually W2S is more like W2W with him...