My EG ds12 didn't start reading until somewhere midway through K (I don't know exactly when because he didn't want us to know he could read! So maybe he started earlier and I just don't know it lol - we found out when he accidentally read to an aunt without realizing she might talk to us and we might find out he'd read to her). Once he was reading it just really took off quickly and he was reading way way waaaaaay ahead of grade level by the end of K. Same thing happened when he learned how to talk - he didn't babble, say a word, nothing until he was three. Then he was all of a sudden talking like a college professor, complex sentences, multi-syllable words, deep deep thoughts.
My HG+ dd8 is a math whiz, who also seemed to be ahead of grade level in reading when she was in preschool - she started early, very self-motivated etc. She was ahead of grade level in kindergarten, then she sort of "fell" to grade level. We found out eventually that she has a memory challenge that impacted her ability to learn to read, so even though she's clearly a highly capable student with a gifted intellect, reading does not come easily for her. Our MG dd10 really struggled with learning to read, until we found out she had severe vision issues - once she went through vision therapy she turned into an avid reader reading ahead of grade level almost overnight.
Anyway, I wouldn't necessarily assume that your ds is lazy in that it's quicker to ask someone else to read for him - having someone read to you when you're young is a happy experience - I would keep reading to him and not worry about whether or not he's ready to read on his own yet - he'll get there
Best wishes,
polarbear
ps - my ds12 also memorized books when he was little - so he could pull out any of his books, turn to any random page, and make it look like he was "reading" it - but really he was just remembering what it said because someone else had read it to him once. I am always amazed at the things he can remember!
