Ashwagandha

Hey guys! A while ago a read a post here on the amazing benefits of ashwagandha and how it can help you sleep better.Since I have been having trouble sleeping and waking up multiples times at night ,I bought it to see if it can help.So on Saturday I tried like an 1/8of a teaspoon at night and felt like it had no effect on me. So on yesterday night I tried and using 1 teaspoon to a cup of tea and I couldn't sleep at all. Right now am so tired can y'all please suggest ways on how I can you ashwaganda to get better sleep. Thanks guys.