That's perfectly fine. Just stop saying you're in communion with them even though there are doctrinal differences. It's not true.
You apparently don’t get that doctrinal differences are not that which we sue to determine whether we are in full communion or not.
I am in communion with those in different denominations, not because of doctrinal stand, but because of the common salvation we share by faith in Christ.
And so what the heck is the big deal about *being in full communion* anyways?
What does it mean and what does it prove?
That a whole bunch of people agree with something? So what? Why is that important?