Answer
(Fatwa: 115/115=H/1429)
You should recite the below verse 12 times with durood thrice before and after:
ربنا ھب لنا من أزواجنا و ذریاتنا قرۃ أعین واجعلنا للمتقین إماما
All the mature family members should recite it after every obligatory salah, before going to bed and after doing wudhu in the morning. Also, it is better to have a schedule of reading out Bahishti Zewar and Fadhail Aamaal at home, fix a time and get yourselves free for that.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband