We have a 7 months baby. She is bottle fed. In her first 1 or so month, she was bottle fed Aptamil bottle (non-powder/liquid). The doctors diagnosed her having silent reflux and it was extremely hard for her to feed. Based on the doctor's advice, we switched to Aptamil Anti Reflux formula (which is thicker). Since then, and until today, we have been using anti reflux formula with lactlose per the dr's advice to fight the constipation. She doesn't seem to have reflux any more.
All of a sudden, she completely rejects the Aptamil Anti Reflux / bottle. We changed bottles, nipple flows, temperatures, locations, positions, but she just keeps rejecting even starting (once she smells it, she turns her head away). We tried switching from aptamil anti-reflux to aptamil liquid and separately kendamil liquid. She has a hard time with completely liquid milk but she drinks a little bit although she looks uncomfortable when drinking (plus this will potentially cause her to get a reflux). We can only get her to drink two times a day now when she is sleeping. She eats 2 times solid food per day.
It is getting very stressful for us not knowing when or if she can drink milk normally now.
What could be the cause of this new behaviour? What's advisable for us now to do? Have anyone over here had this type of situation?