Auto Login/Create Session after we activate factor

We are building our own custom flow, and would like to know if there is a good way to create a session/login a user after we activate their MFA SMS factor.

We are using the Okta.AspNetCore (1.2.0) and Okta.Sdk (1.2.1) nuget packages.

We would like to be able to automatically login the user since they would have already provided their login, password and MFA factors.