₦airaland Forum

Hi please I will be glad to get your opinions on this issue. I am. Ghanaian and I'm married. I am in my early 30s. I got my b1/b2 visa in 2023. The reason of the first visit was for a conference. I indicated I will be spending 10days in my ds-160 form however I spent 3 weeks thats 21 days. I later on in the year went to the uS in December same year for the Christmas and New year holidays. For that I spent 4 weeks.
At the time I was entering the US for the second time I had already received admission for law program from two schools. But I still returned after my vacation and came back to apply for my F1 Visa. Here in Ghana you can use dropbox to change from b1/b2 visa to f1 which I did because I still have a valid us visa for four more years remaining.
I have a full tuition scholarship of $45,000 but i and my father are sponsoring the remainder of my other living expenses, fees and books which amounts to $26,000.
But when I did the dropbox the embassy asked for only my I-20 with no other supporting documents to be attached whether admissionor scholarship letter. Two weeks after the submission I received a refusal under 221g asking to schedule a follow-up interview.
Please I would like to find out what possible questions I should prepare for and if there's any red flag in my history I should prepare for.

I have a good job and good educational history. I already hol dan MBA from Ghana and I truly attended a conference, I have attendance certificate to back my claim.
Kindly help me with any Contribution
.