The golden rule with toxic relationships is that if people are not contributing anything positive to your life, you do not have to dedicate any time to them.
By slowly reducing interactions until there aren't any left, helps pave the road towards inevitable separation, without making anyone feel hurt right away.
If you have a family member treating you poorly, they do not get a free pass just because they are biologically linked to you.
Decide if they’re toxic or not. If you can, take a break from interacting with them for a few days and reevaluate what you want in your life.