A I am SO sorry to hear your little boy is not being himself. Just love him. Your R with him is your relationship w/ him. Period, full stop. Be with him as much as you can and tell him you love him. I dont think he knows as much as you think at 2.5 unless there is a lot of anger / yelling going on around him which at that age is probably all he can discern in terms of things not going well between you and your W.
Me: 46 Wife: 39 D: 13 S: 11, 9, 7 Bomb 3.2.07, Sep Same Day, D papers 11.1.07 Current Status - Wants to take me through Discovery, I will go to prison first.