I have toxic father. I do feel guilty that I avoid him. My therapist told me that it is OK to limit my interactions with him to absolute minimum. Now she says it doesn't mean if he is ill (he is not but I was asking what if he gets there as he gets older)I should just ignore and let him suffer , she said no, you come in bring the meds, leave the food for him and leave, that is it. Keep conversations to a minimum, hi, how are you, ignore when he says nonsense, do your thing and leave. The only way to escape toxic people is either completely stop contact or if impossible, then limit it. I feel much much better now when I see him much less and engage in much less conversations. I keep contact but as little as possible.