Edit ALREADY OPENED Excel by Access VBA

Not sure if here is the best place to ask. Due to a recent company policy,  I no longer have access to Excel VBA, but still have access to Access VBA.

Now, I want to edit Excel by Access VBA. I have learnt that I can do it to a closed Excel, thanks to .theDBguy https://social.msdn.microsoft.com/Forums/office/en-US/6d140614-5f00-4a05-af7a-65cc509dff83/editingcreating-excel-file-through-access-vba?forum=accessdev

However, if I want to edit an already opened Excel by Access VBA, is there a way to do that? Thanks!!!!