But they have stated that the drug produces an initial burst within 3 hours.
It looks like the peak is at 3 hours: https://www.nature.com/articles/s41598-019-53356-2
And Peptron's sustained-release Exenatide formulation leads to sustained elevations of Exenatide for 20 days and steady state levels for up to 28 days: http://www.peptron.com/ds6_2_1.html
