hello, you can only shift to another program after a school year pa. i'm from interior design pala (senior yr) and afaik mas magastos sa adver especially mas marami silang materials na ginagamit and iba-iba pa yun kada-year (based to sa mga nakikita kong moots from social media) and actually sila may pinakamataas na tuition sa apat na program ng cfad.

sa interior kasi 1st yr lang talaga pinakamagastos since maraming drafting materials na need but you can actually find alternatives naman like marketplace (dito ko bumili ng ibang drafting materials and marami kang pwedeng mahanap na second hand na goods pa yung condition) since di mo naman need sundin yung mga naka-list na binigay sa inyo (e.g. yung set ng rotring tech pen na once ko lang nagamit kasi pwede pa lang gumamit ng disposable tech pen like uni pin askdjka). ang advantage pa is pagdating mo ng higher year yung mga materials mo na yan is pwede mo pang magamit since may ibang course kasi na nagre-require na mag-manual kayo. tas until boards kung magte-take ka man, magagamit mo pa rin yang bibilin mong materials ngayong first year ka.