May's tactics, if they can be dignified by a term that implies having thought about what to do, seem to have changed little over the years:
Theresa May tries the oblique defence
Mrs May dealt with MPs' jibes by the simple process of answering every question at enormous length. When she ran out of material for one question, she would backtrack to the previous one and answer that again. It was a tactic that worked well.
https://www.theguardian.com/politics/2013/apr/18/theresa-may-oblique-defence
Theresa May tries the oblique defence
Mrs May dealt with MPs' jibes by the simple process of answering every question at enormous length. When she ran out of material for one question, she would backtrack to the previous one and answer that again. It was a tactic that worked well.
https://www.theguardian.com/politics/2013/apr/18/theresa-may-oblique-defence