Want to connect and old standard ceiling fan to wall light switch
This is definitely possible, but whether you can diy is another matter. It would require running wires inside walls, through holes in top plates to connect the switches to the fans. You would have work in the attic and probably drill extra holes in top plates.

Depending on the age of these fans and make/model you might be able to get the control you want using wireless remote switches. If you did this, you would not have to run a cable and could work entirely in the living space below the ceiling. Personally I prefer the wall controls like you are envisioning, but a professional electrician would be able to do this far, far easier than an inexperienced diyer.

Could you send pics of one or more of the fans? How old are they?