Visitor Visa - B2

I travelled to the United States last year on a J1 visa. I applied for a visitor visa this year but unfortunately I have been refused. I think I was refused basically beacause there was doubts about my intention since the trip was being funded by my uncle. My uncle was sponsoring the trip in fulfillment of his promise. Is it advisable to re-apply immediately using the sponsorship of my father? This will not be the truth though. I am also considering applying on my uncle's sponsorship again but will add my father's documents to prove his finances this time around in order not to contradict the first application. Somebody advice me. I really need it.