I’m 27 months sober, and I’d say every ex-drinker is scared of relapsing to a certain extent. Life events might come along and totally change the way we think. What you can do is keep doing what you’re doing - 2 months is brilliant so far - and take necessary stops to avoid the possibility of drinking, e.g. no alcohol in the house.
Anxiety will be worsened by quitting drinking, but this will improve with time. I’m not playing down two months, but your body and mind will still be adjusting.
You’re doing well.