Online classes for FSP

Hello, I'm currently preparing for my B2 level, and I want to get ready for the preparation of the FSP. I'm not in Germany right now, and I was thinking whether or not do the preparation directly in Germany. It's more convenient for me to stay in my home country for now, financially speaking, and doing online classes. The only thing is I only know people who did it in Germany and I'm afraid that i might not be well prepared if i do the online preparation. Does anyone know if it's as good as the on-site preparation and do you have a good school for an online preparation ? Thank you very much :)