Nice <333 From my (kinda brief) experience with pixel art, it's not time consuming at all. I made a video for my gf this year without knowing a thing about pixel art one month prior to starting the project and I realised I was even faster with it than I am drawing in a normal program It must be because I don't have to worry about the line weight and all that x'D
My pixel art is not the best at all tho, as I said, I just learnt the basics and jumped in, but it wasn't nearly as hard as I thought it would be, seriously. If you want to give it a try, I used aesprite (it's not a free program, but it's not expensive at all either and it's very very easy to use).
Also this is the vid I did in case you want to see how I approached the style change.
If you end up deciding to go for it feel free to hit me up, I'm no expert at all but I may be able to help you even if it's just a little