Pending H4 to f1 visa change


Currently my husband is on F1 cpt and I’m on f2 visa. My husband is planning to proceed with premium processing on H1B. I’m planning to study a full time course in future. If I apply for H4 now, My visa will still be in pending status. However If I wish to change from H4(estimated processing time at least 8 months) to F1, what kind of problems I might face when converting from pending h4 to f1. Will be there be any disadvantages? Will I be grilled on anything in visa interview?Is there any other way out?