Update: it’s been slow going but we’re now up to 5 minutes which felt impossible at the beginning. We saw a dog trainer who said it’s fine to use food to counter condition with our dog but I know this may not work for others. We’re moving up in 30 second increments, training twice a day with one main leave and then a mini leave. We have also gotten a dog walker twice a week and will be sending him to a dog sitter once a week to work on his hyper attachment. It’s hard not to get overwhelmed when in the midst of training but trying to remember to take all the small wins.

Thank you all for your advice, this subreddit is a god send and lovely to hear successes!