BLW???

So we started purees a couple weeks ago LO was 51/2 months he has been showing signs of being ready for food since 4 months and was grabbing food from me so I just figured I'd ease into it. Well he gets SUPER frustrated that I don't let him do it himself, so much so he grabbed my hand with both hands and shoved the spoon into his mouth almost gagging himself because he was so excited! So I'm wondering if we should just say off with the purees and do BLW? And when you do BLW you follow the same starter food guidelines?  And do you do one food at a time still or do you mix them? If he is interested in spoon feeding himself do I let him? If so what spoons are best for learning? FTM here so I'm sorry if this sounds ignorant.