Alcohol doesn’t feel fun anymore ?

I’ve started drinking around July and felt this euphoric buzz, where I was genuinely carefree,dancing etc. So obviously I chased the high but now drinking the same amount of alcohol makes me drowsy and kinda beaten down exhausted. I’ve tried incorporating several alcohol-free days but when it comes around to me drinking I never could attain the same original feeling. Also I tend to get sober within 2 hours and if I’m drinking before I sleep I tend to wake up in the middle of the night, whereas when I initially started drinking it kept me sedated the whole night.

Is this because I’ve developed a high tolerance ? .For reference I’m 5’4 and 143lbs and I drink 10cl/ 100ml/ 3.3 oz of vodka. Will I ever get the same feeling again? because now it just sucks