Good to see you on Practo.. As u have already achieved your most of target for qualify half marathon.. Because u reduced your weight in good manner..Now u should consider about nutritious diet , stamina , exercise, yoga and pranayama..
Next Steps
Consult doctor online or in person..
Health Tips
Nutritious home made food
drink plenty of purified water with ORS
Protein enrich diet
Daily Swimming and Cycling
breathing exercise yoga pranayama etc
Loads of seasonal fruits..