I once heard Neil Cole speak at a house church conference where he mentioned a simple discipleship system he developed that uses no curriculum. He called his system Life Transformation Groups. You can read about this simple tool that this website. It seems like it could be a very effective tool. You may read an excerpt from his book Cultivating a Life for God at this link. at this link.
Rise of Microchurch
Pandemic Burnout Article from NYT
I expect we will see a lot of people in this condition