To reiterate,
C#sus 2 is just a C# with an open d string which you hammer on the 2nd fret(* is the hammer on sign).
C#sus 4 is the same as a C# except the d string is played on the 3rd fret.
C#maj9 comes up later and it's like a C# except the middle note is on the a string not d
This is how Mitch plays it himself.
C#sus2 * C#sus4 x3 C#
C#sus2
i'll start it off by saying i'm not one for the complaining
C#sus4
you wouldn't know it from my writing
C#
you wouldn't know it from my songs
C#sus4 C#sus2 *
but i am different, i am free
C#sus4 C#sus4
i am what you need
C#sus2
C# C#sus2
but oh my god, i miss you more than i thought was possible
C#sus4 C#maj9
i understood the obstacles but you could have tried more
C# C#sus2
because sometimes it seems, i need a mom more than i need to eat
C#sus4 C#
so i didn't eat and i didn't sleep, i'd go all day without a bite
C#sus2 *
and that's not my fault
C#sus4
that's not my fault
C#maj9
C# C#sus2
and i'll admit sometimes my chest gets so tight that i throw fits
C#sus4
you said you'd always be there, where are you through all of this?
C# C#sus2
because this is hard, this is way harder than i thought
C#sus4
i'm so concerned about the ending that i don't even know the plot
C# C#sus2 C#
except for i am different, i am free
C#sus4
i am what you need
C# C#sus2 C#
i am different, i am free
C#sus4
i am what you need
C# C#sus2
so you think of all the things that make you sad
C#sus4
and don't include them in your better half
C# C#sus2 C#sus4
because i'm not like you
C# C#sus2 C#sus4
i don't find happiness in a meaningless existence
C#
i don't know what i'm going to do
C#sus2 C#
but i am different, i am free
C#sus4
i am what you need
C# C#sus2
and yeah, i believe that there's a god
C#sus4
i believe that there is something out there other than my thoughts
C#
i believe it was never science against religion
C#sus2
it wasn't poor against wealth
C#sus4
It was always me against myself
C#
and i'm so scared who's going to win
C#maj9
because i wake up feeling so shitty
C#
it's been so long since you've been with me
C#sus2
i don't know where this old body's going to go
or my soul
C# C#sus4
but i know i am different, i am free
C#sus2 C#
i am what you need
C# C#sus4
i am different, i am free
C#sus2 C#sus4
i am what you need