We are both teenagers. We have been friends for more than a year and a half.
I was suffering heavily for a long time, because of a lot of personal stuff. He was really supportive, and he did stand with me, and he really did help me get back on my feet, but I needed a lot of his support as I have barely any people to talk to and my school life is not the brightest. Now I feel like he is growing a bit distant or something. He gave me a different and better mindset, but it took him a very long time to accomplish that, and he had to do repeatedly, and that is on me because I was struggling to understand and I was in a destructive cycle of self-pity and shame, but now I am in a better place in life generally. He did say I am showing initiative, but I was unable to proceed, which is 100% true. But now I am turning that into action and things are looking up.
Yesterday I wrote him a message and thanked and apologized to him at the same time, that I had a shoulder to cry on and I am very thankful for it, but I leaned on it too much and that was purely unintentional, and I am deeply sorry. He said apology appreciated and no worries. Then he said let's talk today in the morning and that he will call, instead I ended up calling him just before noon he said that he actually was studying so he could not call. He said that let's talk in the afternoon, and I told him that it would be best if he rings me as I do not want to end up disturbing his studies. So, I am waiting for him right now. But I know he is a bit busy these days so he might not call but regardless.
We even call each other nicknames and he has stopped doing that since 2 days.
Am I overthinking this excessively or am I about to lose the one true friendship I have ever had? I do not want to lose him, as he is the only guy I trust, and he even has said that we both are close friends, but I am worried. Should I have an open conversation with him, or just leave it as it is as I have apologised and hope for the best?