Thanks for your query,based on the facts that you have posted it appears that you have benign enlargement of prostate with diabetes and hypertension
You have nocturnal frequency 4 times in night which needs to be taken seriously and investigated to assess the size of the prostate and obstructive effects of the same .
Please consult qualified Urologist
for clinical evaluation and digital rectal examination
and get your ultrasound scanning of the abdomen done to see the status of obstructive uropathy
that you have due to enlarged prostate
You may need to change the drugs or may need to go for surgery to alleviate your obstructive urinary symptoms.