D​‌‍‍‍‌‍‌‍‍‍‌‌‌‍‌‌‌‌‌‌​ear Writer,
As per PhD supervisor direction, advised to adopt a qualitative research approach methodology only and not a mixed method. Please revie​‌‍‍‍‌‍‌‍‍‍‌‌‌‍‌‌‌‌‌‌​w again the whole proposal for best quality product.
Attached papers on qualitative research that will give you a solid base line for the proposal​‌‍‍‍‌‍‌‍‍‍‌‌‌‍‌‌‌‌‌‌​.