Question on ERB's Palsy Treatment for infant

Hello,
My daughter, who is 15 DAYS old, has ERB's palsy after a forcep delivery, which affected her left shoulder and elbow.
We had started with passive and active physiotherapy from day 3. Now She can move her fingers and hand well. She could also hold on to my fingers strongly. But her shoulder and elbow are not moving.
Question 1 - Now our Dr has suggested Vitamin-B, Vitamin-E, and Vitamin B12 (mecobalamin) - all syrups - supplements for her. Is it safe to give these to her?. Also would it help?
Question 2 - There is a plan to start Faradic OR Galvanic stimulation for her after 3 weeks. Is this safe and would this help?
Question 3 - She tries to raise her arm (lying on her back) and cries a lot while doing that (tries around 4-5 times a day) and now a days manages to raise her arm by 2 cm (Dr says its because of internal rotation and NOT deltoid/biceps action). Is it because of pain she is crying?
Appreciate your help and guidance.
My daughter, who is 15 DAYS old, has ERB's palsy after a forcep delivery, which affected her left shoulder and elbow.
We had started with passive and active physiotherapy from day 3. Now She can move her fingers and hand well. She could also hold on to my fingers strongly. But her shoulder and elbow are not moving.
Question 1 - Now our Dr has suggested Vitamin-B, Vitamin-E, and Vitamin B12 (mecobalamin) - all syrups - supplements for her. Is it safe to give these to her?. Also would it help?
Question 2 - There is a plan to start Faradic OR Galvanic stimulation for her after 3 weeks. Is this safe and would this help?
Question 3 - She tries to raise her arm (lying on her back) and cries a lot while doing that (tries around 4-5 times a day) and now a days manages to raise her arm by 2 cm (Dr says its because of internal rotation and NOT deltoid/biceps action). Is it because of pain she is crying?
Appreciate your help and guidance.