Ease of Use – How can a "save draft" for a wizard be supported if the user needs a lot of time to complete a step?

I have a simple user workflow where the user has to complete the process one at a time. However, it may take a day or more for Step 2 to complete.

If the user in the current UI decides to complete the process at a later time, he can click Save to skip the process and he will be redirected to the summary page. The user can save the entire process as a draft. When the user returns for editing, no wizard approach is performed. You can change each step individually by selecting the process steps from the summary.

Enter image description here

Is the approach intuitive? Are there alternative patterns for processing saved designs in a wizard approach?