Right after you learn the deer god language you are prompted with a cut scene that you skip with the "A" button on Switch version, not sure about button on other versions. Right after you press "A" start spamming "A" and you will clip through the deer gods body and you just turn around the camera and fly to the next area of the run. So you don't have to wait the 5 secs just sitting on the deer gods horn. Its a small skip but 5 secs might be worth it and its easy to do :)

Nice find, will have to practice/look at it. :D