Hi any help would be awesome

Any guys in here have some advice about Been in a sexual marriage for 12yrs now and my wife just doesn’t like giving bjs anymore says she has throat reflex easy whatever that is lol but we do everything else I do all her needs but she doesn’t my always we have three young kids together and if she’s tired I won’t even ask so ya but why we are in the moment I will kinda to her but she not in mood for bjs but anything else I just kinda think it’s unfair for me give her all her pleasure but not mind we haven’t had bad experience with it before she just like I think ur to big in I have reflexes idk lol but this been going on for 4/5 yrs now any advice would be great thanks if you read this far I know it can be long but thanks