Hi @kater
Happy to hear that you’re started to get the hang of Fibery. Michael is indeed right - your use case fits perfectly with the custom app I built and shared a few weeks ago.
Please have a go at installing it - I suggest you sync only Weeks and Days.
Then you will have an entry for every week/day of the year.
Days will be related to Weeks via the Part of/Comprises relationship.
The only thing that doesn’t quite match your needs is that the days will be named with the date, not the day of the week. The day of the week is an available single-select field though, so you will e.g. be able to create board views with the days of the week as columns.
I’d love to hear how you get on with it.