Windows PC＋AnacondaでCUDAを利用可能にしたい

BigSleepというAI画像生成のパッケージが動かしたく自宅のWindows PC（RTX2060Super搭載）にAnaconda3.9最新版をインストールし、
CMD.exePromptから以下のようにインストールを試みましたが失敗しました。

CMD.exePrompt
1$ conda create -n painter
2$ conda activate painter
3$ conda install python==3.6.10
4$ conda install  cudnn=7.6.5=cuda10.0_0
5$ python -m pip install --upgrade pip setuptools
6$ pip install big-sleep
7$ dream "a pyramid made of ice"
8Traceback (most recent call last):
9  File "C:\Users\hoge\anaconda3\envs\painter\lib\runpy.py", line 193, in _run_module_as_main
10    "__main__", mod_spec)
11  File "C:\Users\hoge\anaconda3\envs\painter\lib\runpy.py", line 85, in _run_code
12    exec(code, run_globals)
13  File "C:\Users\hoge\anaconda3\envs\painter\Scripts\dream.exe\__main__.py", line 4, in <module>
14  File "C:\Users\hoge\anaconda3\envs\painter\lib\site-packages\big_sleep\__init__.py", line 1, in <module>
15    from big_sleep.big_sleep import BigSleep, Imagine
16  File "C:\Users\hoge\anaconda3\envs\painter\lib\site-packages\big_sleep\big_sleep.py", line 26, in <module>
17    assert torch.cuda.is_available(), 'CUDA must be available in order to use Big Sleep'
18AssertionError: CUDA must be available in order to use Big Sleep

エラーメッセージで検索するとpytorchをインストールせよという情報があったので試しましたが駄目でした。

CMD.exePrompt
1$ conda install pytorch torchvision torchaudio cudatoolkit=10.0 -c pytorch -c conda-forge
2$ dream "a pyramid made of ice"
3Traceback (most recent call last):
4  File "C:\Users\hoge\anaconda3\envs\painter\lib\runpy.py", line 193, in _run_module_as_main
5    "__main__", mod_spec)
6  File "C:\Users\hoge\anaconda3\envs\painter\lib\runpy.py", line 85, in _run_code
7    exec(code, run_globals)
8  File "C:\Users\hoge\anaconda3\envs\painter\Scripts\dream.exe\__main__.py", line 4, in <module>
9  File "C:\Users\hoge\anaconda3\envs\painter\lib\site-packages\big_sleep\__init__.py", line 1, in <module>
10    from big_sleep.big_sleep import BigSleep, Imagine
11  File "C:\Users\hoge\anaconda3\envs\painter\lib\site-packages\big_sleep\big_sleep.py", line 26, in <module>
12    assert torch.cuda.is_available(), 'CUDA must be available in order to use Big Sleep'
13AssertionError: CUDA must be available in order to use Big Sleep