'**Apprehensive**'[1] or '**Apprehend**'[2] may be the word you're looking for.

E.g. She was **apprehensive** about the next two weeks of the tournament.

Or "She became/came to be **apprehensive** about the coming weeks of the tournament"

Alternatively, "She came to **apprehend** the two weeks of a major tournament"

Though I tend to generally avoid the use of the word in this form as it can easily be misunderstood as the verb of a different definition

Adjective meaning to feel uneasy, anxious or fearful about something.

[1]: https://www.dictionary.com/browse/apprehensive
[2]: https://www.dictionary.com/browse/apprehend