Google docs - reconnect a list before the previous one

I have two lists. A main list and a small list. The small list is nested inside the main one. We can summerize it like that :

1. Install process    1. Step 1    2. Step 2    3. Step 32. Execution process

In google docs, I don't know how to connect the 2. Execution process to the 1. Install process. If I click "Continue previous numbering", it connects 2.Execution process to the small list.

Any suggestions to finally get the same rendering as I mentioned in the example ?