If I was the next showrunner and I'd inherited the Timeless Child mess, I think I'd have three goals in mind:
1. Find something to say about all of it. Make the story ultimately about retcons and 'everything you know is wrong' storylines and what it's like when the foundations of your reality get ripped away.
2. Have it lead to a definite conclusion that makes the whole thing feel worthwhile somehow.
3. Put it away in a box, so new viewers jumping on at a future episode never need to know it ever happened. Everything we know about the Timeless Child is also wrong. Hartnell was the First Doctor, Jo Martin happened, let's keep going.
Basically: find a way to turn its frustrations into virtues that doesn't leave fans of the reveal feeling dissatisfied, and then get the show back on track.