Suggest dropping the alcohol. Perhaps try meditation and you may want to review your pre-bedtime habits, such as watching TV, looking at a computer screen. These actions have been known to make falling to sleep difficult. My own experience is I don't get too concern over the amount of time I sleep. For the most part, I am not always aware I have fallen asleep until I wake up. Some nights I sleep 4 or 5 hours and other nights I sleep longer. I just get up and start my day. Maybe even catch a short nap later on. In any case, my mental and physical health are just fine for person of my age. I just don't concern myself with the amount of time I am sleeping. The body usually takes care of that for me.