Have I been over trained by myself?

I have begun doing daily running since later 2017. In the last two months I have started to run 10km per day because an online post about a 30 days 1 hour daily exercise challenge a lady has taken has motivated me to try the challenge. If someone can do it, I can too! And I succeed! But once I have finally reached day 30 I chose not to stop because I want to see how far I could get to, therefore I continued the 1 hour per day training. However in the last 2 weeks, I found my sleep pattern has changed, I always wake up at night 3 hours after I went to bed. Then no matter how hard I tried to force myself to back to sleep I will stay awake for 1 or 2 hours until I feel the need to sleep again. I usually ended up having only 4-5 hours sleep each night recently. I doubt that this maybe due to the large volume of exercise I have done each day. I would therefore reduce the workload back to 40-45 mins per day since today to see if things would get better, otherwise I would need to see my GP for this issue since lacking sleep really has put way too much unnecessary pressure on my daily life.