welcome to Healthcare Magic.
Excessive alcohol use can cause respiratory distress
due to following reasons:
-Infection of respiratory tract.
-Aspiration during alcohol intoxication
due to alcohol use.
It is good that you have stopped alcohol use. Same time get yourself evaluated for above conditions.
It is better to rule out chronic neurological cause also (Like motor neuron disease
or myasthenia gravis) for respiratory problem.
Wish you good health and all the best.
Dr Ashish Kumar Mittal