I wish i had answers. I also dont think having your office in the bird room would be beneficial to you, or them.
I struggle with this too, because of covid I have days where I get to work from home and it can be confusing for them.
Eventually, I will have to return to work 24/7, so I have been trying to explore options that allow extra attention with them, while also keeping in mind they will have days alone.
You may want to reconsider where your office is. By taking it out of the bird room, you ensure they wont feel overly accustomed to your being with them all the time. They need to learn to exist and do things without humans always in sight.
It may be best to attempt to adopt an "work schedule" with them.
See them, love them, have them out for 10 mins or so "before work hours"
When I am home, i wake them early, change their water, and before opening cages, I announce "good morning! Stretch your wings!"
When its time to go in their cages, i will announce, "cage time!" Followed by fresh mash or treats.
Break time, i go and visit them, say hi, talk nice, follow up with, "work time".
Lunch breaks, give them 15mins of flight time and attention, "lunch time! Stretch your wings!!" Followed by "cage time" 15 mins later and more treats.
End of the day, is totally different household setup, couch blankets come out, special treats in a dish, cages are cleaned etc..
I think I have been really lucky, as my Sparrow gets older, he seems to be really responsive to me and my work needs. He has picked up a ton of sounds he makes that are not loud, to communicate his needs, so I immediately dropped whatever I am doing to try to accommidate his good behaviour.
I mean, its been 6 years with him, and I feel like we are at our best with communication. We have both learned to communicate and Understand each so well because of covid.
But some safe and healthy daily separation can only help your bird when you cant always be there, IMO
