babygirl wants food

Kailyn
So my baby girl turned 5 months a week and a half ago, and since she was like 4 months, when she sees us eat or sees food she reaches for it and hollers like she wants some. Yesterday she was drooling and had her mouth open at the site of us eating.. I feel so bad! 
When can I start introducing her to baby food? 
Is it still to soon? Her dr said wait at least 5 and a half months, but she seems so interested. 
Also, I was thinking about blending up avacado and giving it to her first. Thoughts???