A quick question

After I read a book, I rush into writing the review, cause I'm afraid I'll forget what my thoughts were if I wait to write it. For instance, I read Delirium, by Lauren Oliver, and immediately wrote the review, pouring all of my thoughts into it. 

But I'd like to know, do you do this too, or wait until the release date of the book to publish your review? 

Delirium comes out next February, should I have waited a bit longer to publish my review? What do you think?

Thanks!

xo,

Ella