Once you've converted your Instagram account into a business profile, you'll still have the ability to switch back to your personal profile at any time.
To convert back to a personal account:
Go to your profile and go to settings like this
Tap on the option “Switch Back to Personal Account”
In the window that appears, tap “Switch to Personal Account” to confirm your changes
Note: Each time you switch back to a personal profile, your insights data on Instagram will be erased.