This is the way.

As a follow up to this, here are some other things to consider:

1) If you set Forms to "wait for the workflow to finish" you would get suspended instances when the wf terminates which would let you know something went wrong, but also give you an easy way to retry without a lot of manual data correction after you look into the issue.

2) Once you get your try-catch in place, start keeping track of what kind of errors you are encountering. If they are one-off errors, like a random timeout or something, then you could build in a time-delayed retry and look at ways to prevent the error too.

If it is a data validation issue, such as things being too long for the column, invalid characters, empty values for non-nullable columns, etc., then you can start enhancing the validation on your form and adding cleanup and such to your workflow.