Change plan from company plan to individual plan

I think you are confused because there is no such thing as a "business" Photography Plan.  It's the same price per month whether you are a business-owner or not.  So there is nothing for you to change. 

Teams & Enterprise plans are for businesses with multiple employees.  Employers may choose 1 app per month such as Photoshop or all 31 apps & services per month.  But the deeply discounted Photography Plan is not offered to Teams & Enterprise accounts.

To Change Plan https://helpx.adobe.com/manage-account/using/change-plan.html

You need to contact Adobe support to cancel early without a fee

Be sure to remain signed in with your Adobe ID before accessing the link below
-you must also allow 'cookies' in your web browser for this to work
https://helpx.adobe.com/contact/support.html for chat or https://helpx.adobe.com/contact/phone.html
-click the chat icon at the bottom right of the page to open a chat session
-the chat icon looks like '3 dots inside a circle' at the lower right
-type AGENT into the chat window to connect directly to a person rather than the AI
Do be aware that Adobe's staffing is impacted by the virus, so wait times are long
.
Also: beware of answering anyone who sends you a private message
-click for more information about scammers https://tinyurl.com/10791730