This may be stupid...

Lo had a 4 month checkup today. She eats 8 oz of formula every 3 hr. Her Dr said that was way too much. She said start rice cereal. Thing is, she was a Korean woman and talked too fast. I caught most of it but she also wrote it down for me. It says, 4 to 5 oz formula with one and a half scoop of rice cereal. For constipation, 2 oz apple juice + 2 oz pune juice + 2 tsp dark karo syrup. Do I mix this all together(over 8 oz), give her the rice cereal one feeding then the juice another feeding or only the juice when she gets costipated...I'll call her Dr tomorrow but I'm a ftm and i don't know if this is common for everyone and everyone knows, maybe save me a call tomorrow