How long does it take for a TH8 to farm level 8 walls?

I want to do it over the summer.

Took me 3 weeks with lvl 7 8 may need like 8-9 weeks if u play a lot

I play whenever my troops are ready. My army only takes about 20 minutes to train and it gets me 200k of each every raid.

I farm around 10 skulls on a good farming day easily.

If you look below on this thread, you can see similar threads about this, other users may have their way of farming walls there.