What's the best solution to fix a Mac with a liquid damaged and broken keyboard?

Unfortienaly I spilled some milk on my Macbook Pro M1 2021. I took it to a Mac cleaning service the next day and they cleaned the Mac. Fortunately, the board is not damaged and there was almost no liquid on the board. Everything is functioning as normal except the keyboard. Some keys are acting weird and by looking at the circuit underneath some keys (e.g., right arrow,) I can tell the keyboard is damaged and has some obvious problems and is pretty much done/dead (I'm typing with the keyboard now, but some keys are gone!). I temporarily got a wireless keyboard to be able to use the Mac until I figure something out. Considering this is a fairly new Mac (I have only for less than a year now,) and the board is not affected, I'm trying to see what would be the best solution to get this Mac back to normal. I wonder if entirely changing the keyboard would be a good or best solution considering the cost and everything? Or can I partially replace only those keys that are not working? Or do you think changing the keyboard is not worth the cost and I should figure something else? And if changing the keyboard is the solution, I wonder if I can find the original keyboard for this Mac? Another problem is that I'm pressed with time, so I'm also looking for a solution that can be done in the sortes amount of time possible. I know I've asked a lot of questions, but any input or feedback on any of the questions would be helpful.