@caregivernle, I'm sorry to hear that your friend is suffering. Being a long distance caregiver is challenging, but I'm sure he is grateful to have you researching for him.

Please note the Community Guidelines that offer 12 short rules of conduct that help keep the Mayo Clinic Connect community safe, supportive, inclusive, and respectful.

See guideline number 2.
2. Remain respectful at all times.
– Exercise tolerance and respect toward other participants whose views may differ from your own. Disagreements are fine, but mutual respect is a must.
– Personal attacks against members or health care providers are not acceptable. Such posts will be removed.

As per the Community Guidelines (https://connect.mayoclinic.org/blog/about-connect/tab/community-guidelines/) I edited your comment questioning the qualifications of another member, who also lives with esophageal cancer and has a wealth of experience to share.

Your friend sounds like he might benefit a team approach that includes physician, dietitian, speech pathologist and possibly a social worker or therapist. I'll point out that dietitians specializing in oncology do much more than suggest diets and what foods to eat. They can also provide assistance with
- managing high risk malnutrition and maintaining nutritional status during treatment
- tube feeding
- nutritional supplements
- general counseling
- providing solutions to problems, including tips for taking food when nauseated
- preventing treatment interruptions
- helping to ease side effects
- improving their overall quality of life
- advocating for the patient
- being a liaison to other team members

Do you know if your friend saw a dietitian specializing in esophageal cancer patients?