@jase jackson USA Thank you for reaching out.
Typically, it takes less than 1 minute per GB of space used while scaling from S0 to P4.
The duration that you mentioned is well within the expected time range.
Reducing I/O intensive operations during the scaling process can help shorten the overall time.
----------
If an answer is helpful, please "Accept answer" or "Up-Vote" for the same which might be beneficial to other community members reading this thread.