To frame this answer I have a BSc (Hons - 1st) Nutrition and am accredited with the Association for Nutrition (ANutr) continuing to do a Master's by Research in Psychophysiology (nutrition-based).
Firstly, you should consult a medical professional before you undertake intermittent fasting - yes yes I know boring but there are very real risks and you should be safe. This would involve the ABCDE of nutritional analysis and as bare minimum a check-up with full blood counts by your doctor.
Secondly, intermittent fasting in itself is not a great way to lose weight. Calorie deficit is more effective than abstaining and then gorging.
Thirdly, I am not sure what protocol of intermittent fasting you have chosen but generally it is thought that a 12-16 hour fast should be sufficient. This also allows at least 2 meals since anti-nutrients etc can come into play with a single meal. Certain nutrients compete with each other for absorption and therefore you may develop deficiency.
Fourthly, you do not have to be sedentary in the future. Research shows people are far more efficient working in shorter bursts and benefit from fresh air, exercise and mental downtime as far as productivity, mental health and sustainability are concerned.
Additionally, depending on your age (18-21 for example) you might still be growing so this would be inappropriate to say the least. Also for females, bone formation in this age range continues to be vital.
Please do think on these points and consult with an appropriate professional. Also please sign up for study skills courses.
I wish you the very best.
PS: if you must fast, it is utterly vital that you hydrate with consideration too for your minerals (electrolytes).