Yes I was able to resolve this before applying for citizenship.
If you already have OCI, you can update OCI by submitting a application for updating name change with name change certificate and id documents reflecting your new name.
Applicant here waiting for test invite from Hamilton office. In process since Oct 2019.
Contacted IRCC last week & was informed that everything is in order. The agent advised me to wait patiently from Hamilton office & gave no deadline on when to expect test invite citing low operating capacity...