Partner does not seek help

My husband was diagnosed with ADHD this year, we have two young children and the fights have become increasingly constant. I don't know how to deal with the situation anymore, because I feel exhausted. I would really like him to seek treatment and objective tools for everyday life. He started therapy last year, after many requests from me, but this year he hasn't returned and isn't receptive to any help. I find myself at a dead end, as my two options are flawed, one would be for us to talk and try to resolve the conflicts, but he is incapable of doing so, the other option is for me to try to overlook the situations and keep them to myself without verbalizing them, but this ends up generating I feel frustrated and angry and I end up exploding over small things (the bucket is always full and about to spill) and he can't understand why, so he sees me as bad-tempered, bossy, annoying, stressed. I don't know how to make him understand the importance of seeking treatment.  And simply accepting that he won't seek treatment is like sentencing our relationship to failure.