https://generationswithvision.com/article/how-to-do-family-worship/

5. Be pure in doctrine. Titus 2:7 says, “In all things showing thyself a pattern of good works: in doctrine showing uncorruptness, gravity, sincerity.” Don’t abandon doctrinal precision when teaching young children, yet aim for simplicity and soundness.

8. Require attention. Proverbs 4:1 says, “Hear, ye children, the instruction of a father, and attend to know understanding.” Fathers and mothers have important truths to convey. You must demand a hearing for God’s truths in your home. That may involve repeated statements at the beginning like these: “Sit up, son, and look at me when I’m talking. We’re talking about God’s Word, and God deserves to be heard.” Don’t allow children to leave their seats during family worship.