Well, when you have troubles with your conscience, even if it is not an objectively grave sin or even a venial sin, but just an imperfection, you can also confess imperfections in your life or a lack of vigilance. Yes, you can confess these things as well.
Dear visitors of Gloria Dei and all who have already written or who will write a personal message to me. I am grateful for your attention, your kindness, for your spiritual support and especially for your sacrifices and prayers for me. God may reward you!