Would it be bad to tell my boyfriend I don't want to send him as many sexy pictures anymore?

My boyfriend and I have been together for 3 years, but unfortunately, we're a bit long distance, so we send pictures to make up for what we can't do in person most of the time. Anyway, I'll send him 1-3 pics 5/6 days out of the week, both out of my own will and his asking. He reciprocates and all, but I think he has something like 250+ pics of me from the 3 years. As much as I like to send him pictures like that and make him happy, sometimes I just don't feel like it but I do it anyway because I love him. But I feel like it's getting a little excessive at this point, so I kinda wanna take a little break from sending them as frequently. I don't know how to tell him without offending him or making him think something is up. Any advice?