The only way I know how to handle those feelings is to keep working my program, one day at a time. Do you also have a counselor for yourself? (preferably one with an addictions background
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How long has your husband been in rehab before and how long ago? Same place?
There is absolutely nothing wrong with taking a year or more for yourself and your kids to work on your own healing separate from your husband, which would also give him time to work on his own recover. With this being his 5th go ahead at rehab, it may be a much needed break for all of you. His past actions are what you need to listen to. That's the truth of what he's showing you.
That doesn't mean giving up on your marriage. It means giving you both time to heal. That can help build a strong foundation to give your marriage a chance. Going back to the same routine and habits that aren't working now can continue to pull you both apart.