sending letters for boot camp

my boyfriend is joining the marines and just left for boot camp. i haven’t gotten his address yet but ive been writing regularly, updating him and telling him about my day, etc. i plan on sending it all out once i can but i have so much written already. how much time does he have to read? i wanted to send all my letters in the same envelope but i was worried it might be too much. should i just send them separately? how ive been writing is doing about a paragraph each day and writing on the same paper until i run out of room. i feel like it’d be weird if i sent them separately and they wouldn’t make much sense. also wastes more envelopes/stamps. i probably won’t get his address very soon which means ill be writing a tonnn more. i’m just worried it’ll be too much for him to read especially if he doesn’t have enough time (im a yapper and i feel like i need to tell him everything). i know he has sunday as a free day for religious time, but will he be able to read and write letters during that time as well? thanks to anyone who responds