How do I convince my husband to pray Fajr?

To help your husband with Fajr prayer, seek Allah's help, and remind him of Allah, death, and the reckoning in a gentle manner. Emphasize the importance of Fajr prayer and performing it on time and with the congregation. Instill in him fear of the texts that warn against neglecting prayer, especially Fajr prayer, and that such neglect is a sign of hypocrisy. Vary your methods and means of advice.