Thank you very much for the immediate replies.
I´m sorry for the long waiting time of my answer, but my english isn´t so good. In order to give an answer, I should wait for my wife
I have tried slugs and snails now. I can´t say for sure, whether the snake has eaten something, but the weight is ok (hasn´t lose weight) and he is looking well.
I suppose the snake prepares itself for hibernating. So actually I´m not shure whether I should better hibernate the snake.

Tino