What can i do to help my 14 mth. old baby eat better? i berestfeed lili once a day in hope that she would want

i berestfeed lili once a day in hope that she would want to eat food it seems that she never wants to eat. I have tried giving her gerber, just giving her food off my plate, i have also tried blending the food she is 14 mths 24 in tall and 19 lbs. is this normal? her dad and i we're thin people so i don't expect her to be fat but i want her to be healthy