Almost everyone reports the same pattern: barely noticeable during a busy day, intrusive at bedtime. That is the silence effect, and it is the most tractable part of the problem.
Sound enrichment means giving the auditory system something else to work on — a fan, a radio left low, rainfall, a dedicated bedside generator, or a hearing aid with a sound feature built in. It is deliberately not loud enough to mask the tinnitus completely: the aim is to reduce the contrast between the sound and the silence, not to drown it out, because complete masking tends to make the brain listen harder for it.
Sleep is worth treating as part of the problem rather than a consequence of it. Poor sleep reliably makes tinnitus more intrusive, more intrusive tinnitus makes sleep worse, and breaking that loop at the sleep end is often easier than breaking it at the tinnitus end.