The trick to get around this is to move smoothly up and down the gradient of social interaction intensity, never dropping below a basic floor of presence: the sense that there are other people in the same place as you.
Instead of having two modes, “in a call” and “on my own,” we need to think about multiple ways of being together which, minimally, could be:
In a video call
In an anteroom to a video call, hearing the sound of others
In a doc together
On my desktop but with the sense that colleagues are around
And the job of the designer is to ensure that their software ensures the existence of these different contexts, instead of having the binary on-a-call/not-on-a-call, and to design the transitions between them.
Start all of the pieces of work a little bit earlier. The key to starting work early is not succumbing to the pressure of having to finish the work. Don’t worry about finishing. If you’re a developer, you can start doing things while your design or information architect are working because a lot of your work actually isn’t dependent on their work. Some of it is, so you probably won’t be able to finish, but that shouldn’t stop you from starting.
Share Work-in-Progress Early and Often
When you share work-in-progress, share it with the caveat that no feedback is needed at this point. You’re simply sharing it to let people know where you are. For example, if you have to make 12 wireframes, share it when you finish 2 or 3. Rather than spending a whole week to drop 12 wireframes, share 2 – 3 wireframes every 2 days. The more often you do this, you start to build rhythm, and rhythm builds momentum.