If i understand you correctly you mean something like this (see attachment 1, 2)?
If so - yes, you can. as long as the sheets are in the same project they share one harness definition.
You can just reuse the harness connector on every sheet you need it.
Don't forget to use non DRC markers on the unused harness entrys and if you (as I understand it) use only one harness connector per sheet
you need a port at the harness input and potentially a sheet where you just connect sheet symbols with the corresponding ports and a harness in between. (attachments 3, 4)
Make sure that the harness definitions and names for both sheet entrys and connectors are identical (accidentally I named it in attachment 3 Test_Offsheet and in attachment 4 Harness_Test - they should be identical.).
Edit: some typos... new keyboard