My daughter is 13 months (today)

And 12 months her doctor told me to switch from formula to whole milk. We tried half formula half milk, just regular milk many different times and she absolutely hated it.

The doctor said it’s okay to keep her on formula until 14 months but just keep trying here and there. Well she still hates milk. She gags. Throws up. Refuses the bottle. I tried it in a bottle and sippy cup. Both she hated. She still drinks a bottle at nap time and bedtime

Any suggestions