hello.
you have read the WHO guidelines as you mention.
yes please its correct that you will need 2 doses if theres exposure again and you have grade 2 or 3 exposure. also read about 10 days watching the dog or cat and subsequent action to be taken.
as you have smart phone you can read full WHO guidelines.
Next Steps
to make it clear and not confusing ,as theres no treatment of Rabies , WHO recommends 2 doses of vaccine even if pre exposure 3 dose prophylaxis was taken or 5 dose PEP was taken in the past .Period.
with recommendation to observe dog or cat for 10 days. see WHO chart in their guidelines.
Health Tips
if still worried you can test rabies anti body titer in your blood ,induced by the vaccine.,in Pasteur Inst India.