Im currently using the Ugold meter to measure the current and have been trying to use the tutorial too, but the best I could achieve was about 500uA after the e0 connected to the cloud then went to sleep.
Then I looked through my hardware pcb to determine if there are any circuits that could be causing battery drain. I had a 10k pull-up on the TX line that was eating 300uA. I removed the pull-up then discovered this issue. Not sure if sleep could be affected by this.