Suggestion: Have one on ones with each of them, regularly, and have them speak (it's not you speaking during this meeting) to explain what they're doing, they w

Suggestion: Have one on ones with each of them, regularly, and have them speak (it's not you speaking during this meeting) to explain what they're doing, they will tell you what problems they face. Speak after them to answer within short timeframe, and most importantly follow up to help them, frequently and in the long term, with thei problem they expressed. I hope it will work for you.