How Can I Safely Transition From 5-HTP To Citalopram For More Consistent Relief While Starting Counseling?

how do I go from taking 5 htp to taking citalopram ? I have been taking 400 mg in the morning and 400 mg at bedtime. I have been taking now for about 8 weeks and although there are times when I feel a lot better but it is not constant and I am now desperate enough to go back on the citalopram for a while to just some constant relief whilst I access my counselling.