hey guys. i have a music theory class in which im gonna have to sing solfege, in the key of C(starting in middle C)

now i dont really have any experience singing, but im definetly eager to improve. ive been using Roger love's "set your voice free" (i recommend it)

he talks about the chest, middle and head voice.
now according to him, the head voice, for the average male starts at B4.
he seems to be pretty spot on, when i tried.

so coincidentally, when im singing my scale, i can only go up to La(A4). i cant really hit the next two notes.

obviously im gonna be practicing like crazy, but any tips? my test is on tuesday...