First of all Daxid is not a tablet which will help you to sleep .
When the person is too stressed or some changes in the routine of the person cause sleeplessness.
If the problem to get sleep is happening for a many days, you need to get an assessment done by a Psychiatrist and treatment is a recommended accordingly.
Next Steps
Wait for a couple more days and then consult
Health Tips
Following sleep hygiene will help you which you can look up online