THis is just how it works.
The 'new' domain may well struggle, to begin with, as it appears to mostly be a duplicate of the old site.
... its why the redirects are so vitally important. It means even if users see the old domani URLs in search result, users STILL reach the new functional URL. It doesn't 'matter' that they were sent to the old URL initially.
The redirect also helps the new domain - in the long term - our rank the old domain. As the new domain as all its own backlinks, AND the links from the old domain. The old domain will in the long term, have less and less links of its own.
Google keeps the 'Change of Address' in place for 180 days, which is an estimate of how long it could take for the new domain to really find its footing. But the redirects should be maintained longer than tat.
ie, most (maybe not all!) should have have transfered to the new domain.