is this pisces man not interested?

Im an aries girl with pisces rising. i texted this pisces guy i like, to tell him that i have the textbook he wanted and we ended up having a long conversation. He was the first guy i have ever met in my life who would reply in long paragraphs, he seemed like a very very sweet guy and i figured that i want to know him more. i asked him if he still wanted the book he said "hell yes" and i told him to message me whenever he is free so i can give him the book and if he'd like, we can hang out afterwards for a bit (my way of wanting to get some alone time with him). he said yes and that he would probably message me on tuesday. tuesday came and he messaged saying that he pulled an all nighter and was sleepy so he went home and asked he said "i will grab the book off you on thursday? " i told him that it is all good he should get some rest and that i have class on thursday plus a birthday party to go to. he has not opened the message and it is saturday and i havent heard from him still.. is he not interested?

i feel a bit insecure because i am afraid i came off too strong