You can increase or decrease the amount of RAM or CPU cores your VPS Hosting by Bluehost Plan by following the steps below.
Step 1: Log in to your control panel. Learn how.
Step 2: Navigate to the Order Information view.
Type the Domain Name of the order in the search field on the homepage, select Order from the drop down and click on Search.
Step 3: Add the required Add-ons
Click on Manage Add-ons.
Select the required Add-on from the drop-down menu and click on Add.
Click on Buy to proceed to pay for the Add-on.