Great and very detailed prediction, I've added it to my list.

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Since time for participation is running out today, I'll also make my calculation:

Time left until January 31, 2023, 23.59h:
24 days
6 hours


On average, each day will be mined (1 Block per 10 minutes) 144 Blocks per day (6 Blocks per hour x 24 hours = 144 Blocks)

Calculation if we won't see any hashrate change:
(24 days * 144 Blocks per day) = 3.456 Blocks
+ (6 hours x 6 Blocks per hour) = 36 Blocks
= 3.492 Blocks until our given date

=>

3.492 + 770.843 (current Block) = 774.335


Now, we need to adjust our prediction due to difficulty changes.
Difficulty changes are made due to hashrate changes, which are following BTC price.
I'm expecting BTC to make a nice move towards 25k and more miners will join the network (hashrate increase) => more Blocks will be mined.
It's difficult to predict, how hashrate will be affected but I'm adding a total of 5% more Blocks to be mined.

3.492 * 1,05 = 3.666,6 Blocks

=>

3.666,6 + 770.843 (current Block) = 774.335

My prediction: 774.510