You can try emailing support@snapmaker.com . They have access to parts that aren’t available on the store. You can also check the authorized store fronts and distributors.
Alternatively, some users have rebuilt their 2.0 hotend entirely. It does reuse an existing heat block and electronics though. So depending on what you have, that might not be an option.
If you do find an answer, please let us know. This question has been coming up more often, and I’ve yet to see anybody post a follow up.