There had to be a correlation to timing the dreams started and why they started. Voldemort returned to full body at the end of last year. The fact that he needed Harry to create a body, no.. that’s not quite right. The blood magic book I have been reading has made mention that specific properties in blood can be carried over. Harry mentioned that when Quirrell, controlled by Voldemort, touched Harry, he burst into flames. While Harry has not talked about what happened when Voldemort was "resurrected’, he did have a knife cut on his hand. Voldemort needed his blood. But would that be enough to link them together to the point that there was a mental bleed over? If that was the case, then Harry really needed to see Dumbledore.