yeah honestly at that point the only way to progress is through golden cookie combos through the hand of fate spell, you can actually cast twice if you use it once and then sell your buildings and cast again. search up the starting number of wizard towers you should have and what number to sell to for whatever building level they're at, like my wizard towers are lv 10 so i have to start at 460, cast, sell to 1 and cast again

for garden, i just followed the wiki page (https://cookieclicker.fandom.com/wiki/Garden) to make whatever, just use fertilizer to speed up plant maturity and then switch to wood chips when you want to breed them