S.H.
Good grief I can't believe your Doc okayed this at 4 months old.
Just stop. She is not eating it. She is not ready. You must listen to YOUR baby's cues. You already tried for 2 weeks...that is too long.
The standard recommendation according to the American Academy of Pediatrics, is to start solids at 6 months.
What is the rush to get her to eat at this young an age? It REALLY IS NOT NECESSARY. For the 1st year of life...a baby's PRIMARY source of nutrition is from breastmilk/formula...NOT solids. This is per my Pediatrician. Concentrate on that.
And besides, a baby's internal organs and digestive system & swallowing reflexes IS STILL DEVELOPING OUTSIDE THE WOMB. Thus, the 6 month time-line to start solids.
Research how to start solids online. But this is too soon. A baby this young needs to rely on breastmilk/formula.
If you are wanting to start cereal already because she wakes a lot... (which some people do), this will not necessarily be the 'golden' answer. Doing this can even cause digestive problems in a child, allergies, and reflux, and just make them even worse.
I would really hold off on this. You cannot "make" a baby eat...unless they are ready. A lot of things goes into eating... their gag reflex, their swallowing/mouth/muscular coordination, their digestive system, their esophagus, etc. EVEN their 'taste buds' are STILL developing... and will continue to develop even at 1-2 years old. A baby does not come fully equipped to handle everything yet. It is not just about 'eating' a feast.
All the best,
Susan