I would like to ask about the NIST test suite for randomness evaluation. The test suite consists of 15 subtests which evaluate the particular property of the sequence. In fact, each test has an individual of the minimum number of the bitstream (e.g., $10^6$ bits for Random Excursions test or $100$ for Frequency test). What if I want to test the randomness of short sequences like 128 bitstreams. Is there any reference or suggestion about how to modify the NIST test for this task?
Or what if I just neglect those test which requires a huge number of the bitstream. In that case, is the result still reliable?