Excess of fibre which is there in corn if u take it daily and in large proportion can cause constipation.  As larger amount of water will be required to digest it, if u take less water constipation can worsen. Avoid its daily intake and increase water to avoid constipation.  For severe constipation u will have to take laxatives.

Maintain hydration and take high fiber diet

Take high fibre diet in evening

Corn is good for constipation... You can take fibre rich foods, try banana and milk, probiotics  and isbagol...