Formula milk for my 6 months baby

My baby is turning 6 months old in 2 days time. She have not been drinking her milk very well since last few weeks. Will only drink it after every 4 hour or when she is very hungry. Have already changed the teat, adjust the temperature, try to adjust the environment. But still the same. Currently, she taking the Similac Total Comfort. Her bowel movement is ok. I'm thinking maybe she do not like the taste of the milk. And I'm considering to change her formula milk to another brand. What brand is the best alternative for the current formula milk she drinking. Any suggestion mummies? #firstmom #firstbaby #pleasehelp #milkpowder