My Diaraily Entry

What's up?

Today I'm gonna write just a fewbit, because my diaraily task with my book takeis taking me more time thatn I had thought.

"Few" has to be used with a noun, e.g. "a few minutes," "a few words," etc.

AI've already inmentioned other times I had mentioned that I'm writting a book soand today I was checking my progress.

I've already had writtingen one hundred and seven pages, most of themwhich are organized into chapters so, and I was revising all of ithat.

I hope to reach this objetivegoal.

"Objective" isn't wrong, but it's a bit formal and doesn't fit with the style of the text.

What's up?

The apostrophe takes the place of the missing letter

Today I am gonna write just a fewbit because my diary task with my book is takes me more time that I had thought it would.

either "just a bit" or "just a few words" or "just a few things" would all work

a normal way to say that it is lasting longer than expected could be:

...takes me more time than I (had) thought it would

or

...is taking more time than I thought it would

if "it would" is left out, then "takes me more time than I thought" means that you thought you were spending a certain amount of time on it but were mistaken.

if you include "it would," then "takes me more time than I thought it would" means that you had an idea of how long it would take, but you have found out that the idea was not accurate

the meaning is understood either way, so the only really obligatory thing is to say "takes" if you don't want to say "is taking"

Already in other times I had mentioned that I'm writting a book, so today I was checking my progress.

"today I was checking my progress" is an independent clause, so the comma is necessary

I already had writtingen one hundred and seven pages, most of them are organized in chapters, so I was revising all of it.

"most of them organized in chapters" is a parenthetical phrase, so it needs to be between two commas. also, I don't know what the term is called or how to explain the rule, but taking out "are" like I did is common in parenthetical phrases like this.

you could also say something like :

"I already had written one hundred and seven pages and organized them into chapters, so I was...

or

"I already had written one hundred and seven pages over ____ chapters, so I was... (here you would write the number of chapters you wrote with the first 107 pages)

I hope reach this objetive.

"objective" sounds pretty formal, whereas "goal" is more common

Today I'm gonna write just a fewlittle because my diary task withaily writing for my book takeook me more time that I had thought.

I'm assuming that when you say "diary task with my book" you meant the writing you do every day for your book

Already in other times I hI have already mentioned that I'm writting a book so, and today I was checking my progress.

I have already had writtingen one hundred and seven pages, most of themwhich are organized in chapters so, and I was revising all of it.