Hey, I found this while doing research into whether it would be possible to make NDS repro carts at home (note my wording, "possible" not "practical", i just wanna do it to see if I could lol) and after almost losing hope that it is even a possibility I find this thread! I'll have to do research...
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi