7 days
Discussion
revising my answer 21+ days (over 3 weeks)
I think you gonna win, sir.
Sorry. Feel your pain.
how is it going - progress? last 10-15% is the killer - slow with the heavy blocks .
This old mare she ain't what she used to be

You won, sir.
Sorry to hear that. 😧
Been there several times. The slowdown is the Pi crunching the blocks. Download speed really doesn’t matter that much as compared to the power of the hardware.
An entire class of hardware has been obsoleted by the taproot exploit. Barrier to entry is now higher. The network thusly centralizes.