Issue with the needle bearing, what's the chances of front differential being damage?

Currently I am having that issue with the roaring sound and then changing back and forth with 4hi. Noise goes away when it's in 4hi, noise comes back when back on 2wd. Read a lot about ecgs and hear this is a common issue with people owning Toyotas with needle bearing requiring replacements. For a couple of months I thought it was just the tire or tires. I've done the alignment and rebalance all 4 wheels but still there. I went ahead and bought all what I need from ecgs. I am currently on a time crunch too since I have to move in February.
So my question is, for anyone who has dealt with this issue, how common is it to have the differential needing replacement if the bearing is bad? If that's the case I'm F'd cause I'm definitely required to move in Feb with my family if you catch my drift. I have been driving it around (work is like 5 min away from where I live) so not far at all. And we're trying to sell the other car (09 Honda Civic). I wouldn't mind taking it to someone to fix it just cause I'm on a time crunch, course I'm at the mercy of their schedule and dealing with any incompetent mechanics.
Anywho apologize for the novel, lots going on my end. Just trying everything done in a timely manner.

 

I have replaced the needle bearing with the ecgs bushing in my 2021 4runner and my friends 2014 tundra. Both needle bearings looked fine. I think it's more annoying, than a risk of catastrophic failure. My new to me 2007 tundra also growls. I'll eventually change it out, but I'm not overly concerned.

 

Bought my truck with 188k on the clock, didn't change it til 256k. It was growling when I bought it.

 

Mine growled at 50k miles. It's still growling at 220k miles. It hurts nothing. I'm not wasting time to change it. It's not noticed above 30 mph. I'm fine with it.

 

If you can change brakes, you can remove the needle bearing and install the bushing. I did mine in a parking lot in 3 hours with basic tools. If you need the install kit, I'm happy to send it to you.

Get the bushing from East Coast Gear Supply.