M.P.
4 months is a good age to start her on solid foods such as rice cereal mixed with breast milk/formula and spoon fed. I started mine out at 4 months (one feeding in the morning and one at night) and she did great! I think that if you feel you daughter is ready to start on solids then go ahead and just take it easy. I don't think their little tummies are quite ready for fruits and veggies, yet, but when you do start them I would recommend veggies first b/c they are less acidic and easier on the tummy to digest. Hope this helps :)