I listened to Katy Winton on a podcast and she described her concussion and she said the most important part id how you manage it. She talked about diet etc. You can definitely read too much into it and i've felt worse because of it. The Scottish Guidance on Concussion is a good source and provides a graded chart for getting back to your sport:
https://sportscotland.org.uk/clubs/scottish-sports-concussion-guidance/ I have never been so frustrated with my concussion it really had an impact on my mental health. I could not see a way out. The light headed feeling just would not go away...