Need help don't know what to do anymore

So I'm currently resitting my A levels, having achieved CCE last year in maths, cs, and physics respectively. I currently have an offer from Sheffield University to study cs with a contextual offer of ABB. However, after deciding I was too unprepared for cs, I panicked and decided to withdraw, knowing I was going to get the same grade or even worse. That leaves me with just two A levels to resit, maths and physics. On their website, they state that they "take additional consideration for those who received contextual offers on results day." I'm confident I can get an A in maths and maybe a B in physics, but I've honestly lost all hope and don't know what to do. Would I just get automatically rejected since it'll only show I took two A levels this year? I also can't bring myself to contact them with the fear of getting a reply that I don't want to hear. I'm so lost and don't even know what to do anymore.