_{apparently the cryptogram tag is a tag synonym for cipher so I guess that’s what I’m using}

So recently I have been trying to get back into solving the cryptoquotes because I used to enjoy doing them. This is the cryptoquote for today in the Wisconsin State Journal, which I’m struggling to solve:

GAED CXH'L YGDUD QAP'UD
TUAE; CL'X YGDUD QAP TCHS
NCMGL YGDH KNN MUAYX
SKUR. - VCDUFD OUAYH

Here’s my attempt at solving this:

Right away I assumed CXH'L=ISN'T, meaning that we can rewrite this with

     ISN'T
GAED CXH'L YGDUD QAP'UD

      IT'S            I
TUAE; CL'X YGDUD QAP TCHS

 I  T              S
NCMGL YGDH KNN MUAYX

        I
SKUR - VCDUFD OUAYH

Now I felt like it would be reasonable to assume that QAP'UD=YOU'RE, mainly since you're is the only word that I could think of that had two letters after an apostrophe, so now it is

 O E ISN'T   E E YOU'RE
GAED CXH'L YGDUD QAP'UD

 RO   IT'S   ERE YOU  I
TUAE; CL'X YGDUD QAP TCHS

 I  T   EN      RO S
NCMGL YGDH KNN MUAYX

  R     IER E  RO
SKUR - VCDUFD OUAYH

Now I can make out the first name PIERCE (V=P and F=C) and this is my current progress and where I’m stuck:

 O E ISN'T   E E YOU'RE
GAED CXH'L YGDUD QAP'UD

 RO   IT'S   ERE YOU  I
TUAE; CL'X YGDUD QAP TCHS

 I  T   EN      RO S
NCMGL YGDH KNN MUAYX

  R    PIERCE  RO
SKUR - VCDUFD OUAYH

So my question is: Is there anything I could do from here, or have I assumed anything incorrectly so that I’ll now have to restart?