Step 1) Download the Video Speed Controller plugin for your browser (link to Chrome plugin)
Step 2) Wait until 10:40 a.m. Mountain Time on Saturday of General Conference weekend
Step 3) Start watching General conference on YouTube at 1.5 speed
Step 4) Complete an entire session including prayers and hymns in 1 hour and 20 minutes, finishing the session at the correct time it would normally end.
Step 5) Repeat as needed
Note: You can speed the video to 1.5 without the plugin, however, the plugin gives more control and options than the built in YouTube speed feature.
Disclaimer: General Conference is for learning, personal revelation, and inviting the spirit (among other things). Do not do this if it will impede your ability to accomplish those goals. I personally watch video content at 2x speed on a daily basis and am used to processing it. Most speakers during conference are not speaking very fast which makes it easier to do this with great results even for those not accustomed!
Happy Conference