When a person has an ice addiction the whole of life changes, both for them and those around them. It is a very addictive substance that has far reaching effects on the user's mind and body. Trying to stop using it is not straightforward and normally requires professional help, and in many cases a proper rehab facility to be effective. Even after use has stopped the susceptibility to relapse needs addressing.
While I seriously doubt that you have made things more difficult for your partner I would like to ask what is worrying you. Has he for example blamed you for his lack of improvement or something like that? Often people do take the easy way out and blame others rather than themselves.
I'm sure you do everything you can to help. Sadly it does not always work. Seeing someone you love struggle with addiction is a heart-rending thing, and you need support and care too - as James1 has said. So who is there for you? A parent, family member or friend to lend support can be a pretty good thing stopping one from feeling all alone.
Please come back and say how you are going