Can I fill EWS in the registration process of jceceb councelling if I filled only general category in jee due to lack of documents?

No, for JCECE counselling 2024 if you have registered yourself as a general category candidate you cannot change your category to EWS. However, you can directly contact the authorities and and explain them your concern if you have the supporting documents. Their helpdesk contact numbers are +91 9264473893 or +91 9264473891.