Uninitialised address in MIPS assembly (Basic)

# Reads 10 numbers into an array
# printing 0 if they are in non-decreasing order
# or 1 otherwise.

# Constants
ARRAY_LEN = 10

main:

scan_loop__init:
    li  $t0, 0              #   i = 0;
scan_loop__cond:
    bge $t0, ARRAY_LEN, scan_loop__end  # while (i < ARRAY_LEN) {
scan_loop__body:
    mul $t1, $t0, 4         #   calculate &numbers[i] == numbers + 4 * i
    la  $t2, numbers        #
    add $t2, $t2, $t1       #

    li  $v0, 5              #   syscall 5: read_int
    syscall                 #   
    sw  $v0, ($t2)          #   scanf("%d", &numbers[i]);

    addi    $t0, $t0, 1     #   i++;
    j   scan_loop__cond     #   loops whole thing
scan_loop__end:
    li  $t3, 0              #   int swapped = 0;
    li  $t0, 1              #   i = 1;
check_condition:
    bgt $t0, ARRAY_LEN, print_finish

    mul $t1, $t0, 4         #   multiplying
    la  $t2, numbers        #   loading first address of numbers
    add $t2, $t2, $t1
    lw  $t4, ($t2)          #   load numbers[i]

    sub $t2, $t2, 4
    lw  $t5, ($t2)          #   load numbers[i - 1]

    add $t0, $t0, 1         #   i++

    blt $t4, $t5, change    #   changes value when x < y
    j check_condition
change:                     #   loop
    li  $t3, 1
    j check_condition
print_finish:
    move $a0, $t3           #   printf("%d", $t3)
    li  $v0, 1              #   syscall 1: print_int
    syscall

    li  $v0, 11             #   syscall 11: print_char
    li  $a0, '\n'           #   printf("%c", '\n');
    syscall

    li  $v0, 0
    jr  $ra                 #   return 0;

    .data
numbers:
    .word   0:ARRAY_LEN     #   int numbers[ARRAY_LEN] = {0};

I am getting an error saying that $t4 and $t5 is uninitialized, therefore not able to compare the two values (blt $t4, $t5, change). I looked through my past lecture examples and exercises, but cannot find a reason why $t4 and $t5 is getting uninitialized, where I tried to explain most of the lines through comments. Can anyone help where I'm getting my code wrong? Thanks