I did not have to switch cat litter for my boy Fuzz who had full front right leg amputation due to osteosarcoma in his right scapula last September.  I used unscented scoopable but downsized to a kitten litterbox and just put enough in for him to use. My surgeon did not say I had to change anything but maybe an easy access litterbox for a bit. Fuzz came home within 24 hours of his surgery and was poster child for recovery.  After spending hours cleaning and readying my laundry room to use as his recovery room, he busted out 2x and flew down basement stairs within an hour of being home.. so plan B resulted in using extra bathroom and blocking off sink/counter and toilet so he could not try to climb or jump.  I covered floor with puppy pee pads and extra rugs for traction on tile floor and added  a couple purr pads/self warming beds for him to sleep on.  He preferred back in corner but would come out to use litterbox and eat.  I worried he would not eat/drink and not take his meds.. not a problem.  I used various wet and juicy food to mix his meds ( he was on a steroid and anti inflammatory for a couple days and remained on liquid gabapentin for over 4 months for pain/healing). The surgeon/clinic sent me a couple cans of the actual food he was eating while in ICU as it was a kind I did not have on hand but he was not picky.  Just small amounts frequently to help not upset his tummy. Spend as much time as feasible but give plenty of quiet rest time. sometimes I just went and sat on bathroom floor while he slept but he came over and would crawl in my lap.   Fuzz never required any type of covering for his staples.  His incision kind of resembled a T  up across where shoulder was then down along abdomen/chest.  The surgeon sent me home with a plastic collar but it was never required.  He did not even notice his incision or staples which came out about 2 weeks later.  After that he was literally back to normal but I noticed periods of probably phantom pain which is why I kept him on gabapentin longer.. he would almost get what appeared to be a spasm in the muscle of the missing scapula and would readjust that area sometimes hissing or growling.. that went away and sadly despite his cancer coming back at the post op 6 month check  you would literally never know he has only 3 legs over a year after his amputation...  We send love and hugs to all of you for the surgery and hoping it and recovery goes as smoothly as Fuzz's did.  Cats are amazing healers and I believe a front leg amputation is easier than a rear.. they adapt so quickly and appear to just shift remaining front leg to more centered position to aid in balance of walk/hop and running.