In the new HH registration the field where we are capturing "Total no. of family members", the inline message for the field should be changed from "Total no. of members living in the HH" to "Total no. of family members".
 
Instead of text box to document no. of family members give number picker and keep default as zero but if "zero" is not changed then do not enable submit button. The user needs to always ask no. of family members during HH registration. Minimum value should be 1.
 
On the HH card, no. of members registered are shown but since we are collecting total no. of family members at the beginning of the HH registration, then on the HH card, in the members section it should show no.of members registered/ total no. of family members.
 
Note: Always denominator of family members should always be equal or greater than the numerator