Non Veg

I have very little protein in my diet as i have been vegetarian fairly all my life and i just cant eat so many uncooked nuts because its very expensive and i just can't consume it daily for some reason. I am thinking to start with fish/chicken for the protein since its convenient and will help me with specific body goals that i want to achieve. My question is will this affect my sadhana? Will it reduce the affects of Shambhavi? Will devi's grace disappear from my life if i make these dietary changes??