I'll be honest, I think Dr Who is due for a 1989-style shelving for a while. I've loved watching the show since I was young, but I think the quality has fallen off significantly recently. Capaldi was the last "great doctor" in my opinion. Whittaker is a good actress, I thought she performed well in Broadchurch (ironically also written by Chibnall), but her writing was just awful, and it feels like they've just spent the last couple of seasons nostalgia-baiting the fans, like with the Midnight episode
It fell apart in the Capaldi era. The "kill the moon" was the "jump the shark" of neu-Who
All of the big franchises are collapsing under the weight of nostalgia and self-reference. Reboots like Picard are shockingly, almost insensitively, retrospective.
It deserves a "1989-style shelving" much more than it did in 1989 itself. The viewing figures are tumbling off a cliff at a time when the BBC in general needs them more than ever.
I think it just needs fresh blood.
Much like the show in the latter years of its first run it collapsed under the weight of its own canon, and writers/showrunners that enthusiastically embraced that canon and alienated the casual audience.
IMO they should never have brought back the Time Lords. That was the genius stroke of the 2005 reboot. Just make the Doctor an intergalactic oddball, let the adventures run from there. What's weird is that Russell Davies was the one who understood this... then when he came back to the show he shoveled nostalgia on top of nostalgia and sank the thing.
I never even watched the Chibnall era so I'm not fully informed but from reading about the Timeless Child arc it just sounds like a show disappearing up its own arse. It's supposed to be a family show, younger kids don't care about that kind of stuff. Just make it fun.