I love this question because I am also a diary giRLIE and I love writing in it every day especially when it comes to planning out my days (cuz I am ESFJ hahaha). But let me try to give you some phrases so you can get the hang of the grammar form for diary writing :)
To answer your question about making breakfast, this is how I would write it in Korean:
8am - ์์นจ๋ฐฅ ํด๋จน๊ธฐ
The form is different! So if you wanted to say something like โtake a walkโ you wouldnโt write it like ์ฐ์ฑ
ํด์, you would write ์ฐ์ฑ
ํ๊ธฐ!
Another example would be if you want to write โdrawโ you wouldnโt say ๊ทธ๋ฆผ ๊ทธ๋ ค you would write โ๊ทธ๋ฆผ ๊ทธ๋ฆฌ๊ธฐ" Hope that makes sense ๐
HAppy DiaRY-ing!!! ๐