Why have I been prescribed multiple new medications to address major depression, GAD, and night terrors?

Hello doctor,

I visited my psychiatrist recently because I have been struggling with sleep issues. I wanted to explore natural options to supplement my current medication regimen (like melatonin) and also asked about natural remedies for anxiety without altering my existing anxiety medications. However, instead of providing suggestions, she seemed adjusted one of my medications while introducing another. Initially, I accepted the recommendations. However, over the past few days, I have contemplated whether I should have advocated for my preferences more assertively, as I had reservations about adding more prescriptions. For context, I am diagnosed with major depression, generalized anxiety disorder (GAD), and night terrors. I will turn 21 later this year. Here is my updated medication regimen following the recent additions:

1. Sertraline, 100 mg, two tablets daily.

2. Lamotrigine, 100 mg, one tablet daily.

3. Prazosin, two mg, two tablets daily.

4. Clonazepam, 0.5 mg, one tablet daily.

5. Trazodone, 50 mg, one to two tablets daily as needed.

6. Additionally, I am taking two pills of 50,000 IU Vitamin D (D2) weekly.

I did inquire whether transitioning to a lower maintenance dose after completing this prescription could be considered. Unfortunately, that question was met with a dismissive response as well. While I understand that none of us here are medical professionals, I would greatly appreciate hearing other opinions. I am starting to feel that I might be on too many medications, but I also recognize that my emotional response to the additional prescriptions might influence my thoughts. Please help.

Thank you.