Hello, you only entrusted a lawyer to represent the first trial before, and it is normal to charge again in the second trial. If you think this lawyer charges a lot, you can also ask other lawyers how to charge. The lawyer of first instance knows the case clearly, and what he said may be true. It is normal that the case is difficult and the fees are raised. If you entrust other lawyers, there may be a problem of not knowing the case. In addition, no matter which lawyer you ask to represent you, the result may be bad for you or good for you.
My views are for reference only. As for how to do it, it's up to you.