Want to have Sex but not ready yet due to mental health struggles

I’m not sure if this is confusing or not but I have been with my boyfriend for almost a year. We’re doing everything but sex right now and it feels good and I’m enjoying it. I told him I want to have sex and I genuinely think I do (I want to be close to him and even more intimate). However, at the same time, I’m not sure I’m ready. I’ve been through a lot of mental health struggles and I just got to a stable place within the last year. Because of that, I’ve been advised to take things slow by my treatment team in order to maintain my progress and stability. My boyfriend knows a little about my mental health struggles but not the whole picture (and I’m not ready to tell him all of it).

So I guess I’m asking, has anyone else ever felt this way? What do I do?