how do you restart after skipping a week??

so i basically abandoned my routine for like six days because of exams and now looking at my flashcards makes me actually want to cry. is it normal to feel like i forgot literally everything? wait is this a stupid question but do i have to start over from hiragana if i forgot some of the kanji combinations? my brain feels totally blank like absolute zero. how do you guys force yourself to open the app again without f