only the first 2 letters of each word

Hello. I would like to trim the file name leaving only the first 2 letters of each word. how to do it?

Fundacja 01 Preludium Fundacji
to
Fu 01 Pr Fu
Replace method...

Replace: ( ?.{2})[^ ]*
with: \1
Occurrence: All
Use regular expressions

Note the spaces in the Replace pattern.
Reply to #2:
works perfectly, thank you