You could use the 'Run To Here' option by right clicking on a step, after which you would like to start recording.
For example, you have a login step in common, which you have added to your test and would like to record post the execution of that step. Now, you can right click on login step and hover on the 'Run' option which shows 'To Here' option. Select it and the test starts executing till the login step and after that step, recorder opens.
Attaching the screenshot of the option for reference.
Hope this helps! :-)