It only takes me around 5 to 10 minutes of work to make the yogurt after watching how @LeeAase makes his yogurt -- https://www.social-media-university-global.org/2020/05/best-yogurt-ever/. It did take me multiple trys before I got the cook time down with the inexpensive yogurt machine (108 degrees for 14 hours). Basically I grind up 4 BioGaia tablets (Lactobacillis reuteri bacteria) and a spoon of the previous batch of yogurt. Mixing it with a little bit of heavy cream. Then I pour in a quart of organic half & half and a little extra heavy cream to top it off. Stir it a few minutes and pour it into 8 small yogurt glasses with lids to go into the yogurt machine.

It's a thicker yogurt but my wife likes it with fresh blueberries or raspberries.