Mobile – Should I keep my password change section in the profile change area or settings?

I've seen some mobile apps keep the password change section separate from the profile edit screen (e.g. Instagram), but others only on the profile edit screen.

I personally am used to looking for the settings icon whenever I want to change my password. However, since my app isn't really that big and doesn't have much to do, I should just remove the settings and change the password in the editing profile.

My app currently has this type of structure:

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My profile has the option to edit the profile.