can i temporarily block all access to my blog??

i'm applying for a fiancee visa to england and they really don't like me. i'm pretty sure they'll find my blog and have a problem with it. is it possible to block it without deleting everything? i've put a lot of time into it and i'm not even close to done with it. thanks for any advice.

We don't have anything like that set up so that it's an easy thing to do. You can, of course, make individual posts private or password protected, but it would be an arduous project to do each one manually if you wanted to do the whole blog.

When would you need this and for approx how long?