Working on a Finance Dissertation? How Did You Get Expert Input?

I am in the middle of my finance dissertation, focusing on investment models At the same time, I have been involved in a demanding student consultancy project for a local business, which has taken many hours each week This has made my own writing progress very slow I feel confident in my data but need help making my analysis and conclusions sharper Has anyone used a finance dissertation service for this kind of critical review? I am looking for a specialist to evaluate my work and suggest improvements, not to write it What was your process for finding a helpful and knowledgeable advisor?