hi
30 min naps suggest OT and maybe you stretched too much too soon, or with NWs he can't handle 3 hours first thing.
NWs where Lo is up and chatting and just awake do suggest too much day sleep as krissy said. tracy recommends in her book not to let Lo sleep longer than 2 hours at a time as this can interfere with night sleep. (exception would be if LO is only having 1 nap in a day...i think then this nap could be longer than 2 hours).
shorten up the A time a bit and see if this helps.