He was dancing with Vitalina from the start, after the gold at the European Championships guess that he wanted to win the gold with her at WC. He will need time to adjust to a different partner but they are geting better and more relaxed as time and competition go. In standard I like more Elizaveta then Vitalina, who is more for latin. Their coach very good fit their different styles and I think it will be great couple, Elizaveta is more sharper now
I definitely agree with you, Elizaveta is getting so much better since she started dancing with him. I have noticed they are more relaxed, she looks like she's adapted but I he looks like it will take a little more time.