you have not mentioned your symptoms , but for all the allergy the first step is to find out the cause of allergy, eg dust allergy
or food allergy
if you have food allergy the best thing is to avoid the food item.
when allergen is airborne eg: dust or pollen , then you need to follow step wise treatment
if you symptoms are mild and appears only in winter you can take anti histamines
and control it.
if you have for long duration in winter then you need to take steroid nasal spray
and you will achieve very good control. last line of treatment immunotherapy
and it is most effective.
you seem to have allergy to pollen which is more during winter , i think you should go to immunologist or or good physician and he will guide you further.
keep your self physically fit. home remedy usually do not work, but you can try jalneti , which may help you but no established study done on this