Custom loop pagination in single post type template

single-cursos.php

<?php get_header(); ?>
	<div class="container">
	    <div class="row">

        <?php 
        
        $paged = ( get_query_var( 'paged' ) ) ? get_query_var( 'paged' ) : 1;
        
        $disciplinas = new WP_Query( array(
          'post_type' 		=> 'disciplinas',
          'posts_per_page' 	=> 3,
          'paged'		=> $paged
        ) );
        
        ?>
        
        <?php if( $disciplinas->have_posts() ) : ?>
        <?php while ( $disciplinas->have_posts() ) : $disciplinas->the_post(); ?>
        
            	<div class="col-md-4">
            		<div class="panel panel-default">
            			<div class="panel-body">
        	    			<h3><?php the_title() ?></h3>
        	    			<a href="<?php the_permalink() ?>" class="btn btn-primary"><?php _e( 'Ver Disciplina' ) ?></a>
            			</div>
            		</div>
            	</div>
        
        <?php endwhile; ?>
        <?php endif; ?>
        
        <?php previous_post_link( __( 'Prev' ), $disciplinas->max_num_pages ); ?>
        <?php next_post_link( __( 'Next' ), $disciplinas->max_num_pages ); ?>
        
        <?php wp_reset_postdata(); ?>
        
	</div>
</div>

<?php get_footer(); ?>