(ui / mobile) Designing communication tool without "instant messaging" feel

I am working on the app within medical industry. The purpose of the app is to connect patients and Healthcare Professionals and allow for the communication, downloading special packages with extra information, etc.

The tool should:

  • allow for a timeline chronological view of the activities (the newest activities on the bottom)
  • give a possibility for the patient to make a request or send files to the Healthcare Professional
  • NOT feel as a instant messaging tool- therefore there will be no "free text" field. We want to discourage patients from writing too often and we would like to not put too high expectations on how often and fast the Healthcare Professional will be able to respond. It's not a chat / chatbot solution

I have been looking for some inspirations from other industries. This is what I have found so far.

example 1

This one is a bit too "instant messaging"- like. example 2

Do you know any other good examples that could help me get inspired and design this tool?

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