Hey hi, I would suggest taking pexep that is paroxetine 25mg in the night which also has sedating property along with antidepressant and anxiolytic property.
If still taking it at night is not improving than you can continue pregabalin at 300mg for few weeks than gradually reduce once your anxiety and depression Settles down. It's not about dosage,itc currently about getting your symptoms down than gradually decreasing dosage.dont worry
Health Tips
follow a sleep hygiene routine. try and avoid thinking too much about sleep.