It doesn't make me tired, but my BG is currently under control. I feel quite alert and awake during the day, far more so than I have before. I get up at around 6:00 and by 10:00 I suddenly feel tired and go straight to sleep (Except for last week when I had CovId and sleeping went a little strange.)
I was struggling before diagnosis as pains in my leg were keeping me awake at night and I was sleeping poorly due to stress with work and I had a high heart rate that I could hear while lying in bed. The pains went after going low carb and I started sleeping again as I learnt to not give a rat's arse about work and just shifted the stress onto people who should have been dealing with it anyway.