How to reuse a local python environment when starting Julia Jupyter notebook?

General Usage
1

I have configured a micromamba environment plot manually with all dependencies satisfied. And I want PythonCall.jl (or CondaPkg.jl) to use this environment. In terminal and Julia REPL, I can make it as follows:

PS C:\Users\lenovo> micromamba activate plot
(plot) PS C:\Users\lenovo> julia

julia> ENV["JULIA_CONDAPKG_BACKEND"] = "Null"
"Null"

julia> using PythonCall

Now I want to write code in a Jupyter notebook in VS code. How can I make the notebook inherit in the existing plot Python environment?
Note that, in VS code, I simply create a file “hello.ipynb” and then open it.