He did indeed Junker and if I was sort of person to spend 60 euros to answer a little question like this then I would pay for it. Do you own the book? If so it would seem you would be happy to answer a fellow forum member's question. If not how do you know the answer is there?
My information is that he was briefly with 7 staffel in this period,
https://www.asisbiz.com/il2/Bf-109G/JG52.html
I have the Lipfert autobiography but it doesn't answer the question.
regards
Keith