Shader Storage Buffer Object element reading optimization

Question

Im doing trillinear interpolation using Shader Storage Buffer Object. So i access my ssbo in fragment shader like this:

layout(std430, binding = 0) buffer ColorSSBO { int value[]; };

int c000 = value[x0 + y0 * dataWidth + z0 * area];
int c100 = value[x1 + y0 * dataWidth + z0 * area];
int c010 = value[x0 + y1 * dataWidth + z0 * area];
int c110 = value[x1 + y1 * dataWidth + z0 * area];
int c001 = value[x0 + y0 * dataWidth + z1 * area];
int c101 = value[x1 + y0 * dataWidth + z1 * area];
int c011 = value[x0 + y1 * dataWidth + z1 * area];
int c111 = value[x1 + y1 * dataWidth + z1 * area];

It is becoming very inefficient since this buffer is huge, if I could read multiple elements of the array at once it would be great, or at least those that go in a row

I dont need to modify this array, I feel like I missing something, maybe there is some keyword for readonly

this is how I load ssbo using lwjgl:

public void loadSSBO(int[][] values){
    if (ssbo != 0) GL15.glDeleteBuffers(ssbo);
    
    int size = values[0].length;
    long pixelSIZE = size * (Integer.SIZE / 8);
    
    ssbo = GL15.glGenBuffers();
    GL33.glBindBuffer(GL43.GL_SHADER_STORAGE_BUFFER, ssbo);
    GL15.glBufferData(GL43.GL_SHADER_STORAGE_BUFFER, pixelSIZE * values.length, GL15.GL_STATIC_DRAW);   // declare buffer
    for (int i = 0; i < values.length; i++) {
        GL15.glBufferSubData(GL43.GL_SHADER_STORAGE_BUFFER, pixelSIZE * i, values[i]);
    }
    GL33.glBindBufferBase(GL43.GL_SHADER_STORAGE_BUFFER, 0, ssbo);
    GL33.glBindBuffer(GL43.GL_SHADER_STORAGE_BUFFER, 0);    //unbind
}