Practice/Strategy Question

I have seen several people talking about shifting strategies based on the upcoming opponents and it brought question to mind.
When I have an upcoming opponent that uses a zone defense primarily, do I just shift my practice plan after the previous opponent or do I have to plan the change out before the weekly run practice update in order to benefit from the additional focus?
In other words, does practice actually matter daily and then just update weekly or does everything need to be planned out at least seven days in advance for that week?
When I have an upcoming opponent that uses a zone defense primarily, do I just shift my practice plan after the previous opponent or do I have to plan the change out before the weekly run practice update in order to benefit from the additional focus?
In other words, does practice actually matter daily and then just update weekly or does everything need to be planned out at least seven days in advance for that week?