Hello again Barb ,
I completed all of the above in regards to the recovery drive.
It finished late last night so I shutdown (via the windows icon in the bottom left corner) and left my 100% charged Surface Pro over night. When I woke up I booted the device and it had 79% battery. So it dropped 21% over night when shutdown :(
But I didn't do a 'generic' windows update after the recovery drive install - I am in the process of doing that now (there were a lot of updates needed) Then I will again shutdown in the exact same manner as before 100% charged and see what happens.
I'll give it 5 to 8 hours and reboot. Crossing fingers!
I'll message you and let you know the outcome.
Thanks again for your time and I'll speak to you again soon,
All the best, Steven