en_tn/1ki/11/03.md

seven hundred royal wives and three hundred concubines

"700 royal wives and 300 concubines" (See: rc://en/ta/man/translate/translate-numbers)

turned his heart away

To "turn someone's heart" is to convince that person to change his affection. See how you translated a similar phrase in 1 Kings 11:01. AT: "turned his heart away from Yahweh" or "persuaded him to stop worshiping Yahweh" (See: rc://en/ta/man/translate/figs-explicit and rc://en/ta/man/translate/figs-metonymy)

his heart was not fully surrendered ... as was the heart of David

To "surrender" your heart refers to giving total allegiance and affection. AT: "he was not fully devoted ... as was David" (See: rc://en/ta/man/translate/figs-metonymy)