I understand it like this (and CL, feel free to tell me I'm completely wrong): feedback is comments on what someone has told you they intend to do, suggestions are new items that the person did not say they were doing.So I struggle to understand the difference between feedback and suggestions.
Feedback could be: I don't think doing what you mentioned in that order would be best. What if you do the 3rd item on your list first, because first thing in the morning is when you've said you aren't quite awake and this 3rd task doesn't require much of your attention. Then you could do the first task that is most important to you, later when you are awake and can give it proper attention.
Suggestions would be : why are you doing those tasks? You should be doing this other set of tasks instead. Or why don't you elimate tasks 3, 4 and 5 and just focus on tasks 1 and 2. In this case, the poster has said they intend to do all 5, and this suggestion is not helpful.