i can't set up a hnsw index over my vectors

the vectors are 1024 embed by cohere, seems like the statement gets timed out even though i set it on 20 min,
i create an index with

create index on vecs.my_table_name using hnsw (vec vector_cosine_ops);

create index on vecs.my_table_name using hnsw (vec vector_cosine_ops);

thanks