I hope that it will help. Have you tried taking magnesium as it also helps with insomnia ?I watched a documentary about sleep recently and one thing that stood out to me was that taking a prebiotic (not probiotic) supplement might aid in getting better sleep. The doctor with insomnia started taking it before bed and said that he slept much better afterwards. So there may be a link between gut health and sleep. I've ordered some tablets from Amazon.
How To Sleep Better And Other Things Learned From BBC Documentary 'The Truth About Sleep' | HuffPost UK