Slice up about a third of a can of Spam into slabs, and cook them in a pan until brown and crispy. Then cook up some basic ramen. After the Spam is done, make a simple over easy egg. Put it all together, and you’ve got a simple and pretty cheap meal thatll keep you full until Gabriel’s horn sounds
I havent looked into it too much, but a simple search brought up a discord based around converting PF1e content to PF2e content. Overall tho, I dont see much of a need for it unless you want a really specific monster or item from 1e. 2e has plenty of content and stuff to play around with.