Ups and down are the part of the life. Loosing 2% muscle is not ay big issue I think but you have found it and started correcting you diet and exercise regime is the best thing to do. I love this attitude, You are doing a great a job for becoming a role model here on steemit. Steemfest2 is gonna be really amazing by the presence of people like you, I really wish I could be a part of it.