Cant sleep sober

So I’m a 18yo dude from Latvia. Been drinking for about 4 years, now pretty often 3+ times a month getting shitfaced and partying. But I have always been able to say no to alcohol and go without it for more than a month easily, just never wanted to or felt like I needed it. Once i turned 17 I moved out and started working. Recently started working night shifts for a stable job I can have with school. When school was still going I had no problem sleeping because I was exhausted every day from combiming it all. Now that school is gone I’m not that tired and it’s really tough to fall asleep, started having a beer before bed and it worked wonders a week later I needed 2beers then beer and a shot. Now I’m 6shots of vodka in, trying to sleep and wondering if this is a problem lol. I don’t have the urge to get drunk it just relaxes me and makes me fall asleep. Should I keep drinking before bed or move to sleep pills or is the a better option? I think if I keep doing this it’s going to get to a point where I’m downing half a liter of vodka every day just to fall asleep.