Continuous acquisition of data for 24 H switching to periodic acquisition for 24 H with time delay

I am a new user to Labview and I have been using a simple program to acquire data from two IN DAQ boards with a timing delay between acquisition periods. However, I'd like to acquire data for 24 hours before switching to collecting data at set intervals of time and I'd like to obtain all of that data within the same output file and graphs. I have played around with different case structures and loops and cannot figure out how to alter the periods of time for acquisition. If anyone has any pointers that would be greatly appreciated. I have attached my Vi.