Mild acne and accutane

I'm 26year, unmarried, female. I have been struggling with facial hair since my teen. My acne was also there but maybe I hated the hair on my face more so I always thought about getting rid of hair. I got hair removal lase|r sessions and kept taking spearmint, seeds, and myoinisitol to manage it. And it did somehow.

But last year, I got my serum testosterone checked, and it was way too raised. So my gynaecologist put me on diane-35 for 9 months. It improved everything. Acne, excessive hair, skin texture and whatnot.

But I came off pill and my skin started breaking out. I tried managing with zin, myoinisitol, and vit E supplements and it did help a bit. My acne stopped getting worse.

But in August, all of a sudden my face started breaking out. Everyday, I would get one new pustuler pimple and that's when I started researching about accutane.

In the end of August, my dermat put me on 20mg/day but I was afraid of side effects that I asked him if I could make it 20mg alternative days.

Well, he put me on topicals too. That was the mistake that I now realized. He put me on hydrocortisone, Clindamycin phosphate, and topical isotretinoin. Then a friend of mine asked me to use salicylic acid based foaming cleanser twice a day. The worst I did.

I had just a few pimples but my skin started getting worse day by day. Then, fortunately I couldn't get a new cleanser after finishing one bottle and my skin started to breath.

Now, I'm on week 5, my skin started to dry a lot. I feel itchy. My previous pimples are flaking. But the itch is crazy.

My dermat asked me to take (every day) desloratadine 5mg, 20mg accutane, 250mg metformin, and 250mg azithromycin. Isn't it too much?

I feel like I only need desloratadine because my skin is itchy.

I have taken Azithromycin for a month on alternative days with accutane alternative days. It was good. Never did any wrong to me.

I'm using a moisturizer with Hyaluronic Acid Ceramides, Glycerin, Glyceryl Stearate and hyaluronic acid, a non comedogenic sunscreen, and hydrocortisone only on redness (once a day).

I need advice on taking metformin because I'm not overweight at all. My weight is 50kg. I have PCOS with high androgens.

And is it okay to shift to 20mg per day from 20mg alternative days?

Also I have deep neck lines, so can I use adaplen gel on my neck only while being on accutane?