English/Proofreading question: does "possibly eventually" need commas?

Does anyone know if the commas in the following sentence are incorrect/ungrammatical? Or is it just a matter of preference? I'm proofreading for something where unnecessary changes are frowned upon, so I don't want to take them out if it's fine as it is.

"... problems with walking, which can lead to the need for walking aids and possibly, eventually, a wheelchair."

Should it be:
"... problems with walking, which can lead to the need for walking aids and possibly eventually a wheelchair."

Thanks!