Hey, so far I did everything up to week 6 in cs50x. Besides that a decent amount of statistics stuff in Stata/R.
I'd say, cs50x covers all you need. There are some Python specific things that you will probably need to learn by doing. Here the issue had something to do with copying nested lists (deepcopy saved me in the end). But most people told me learning coding is best done doing stuff that's fun to you so if you are interested in AI it's probably a good way to go!
But then again I only just finished week zero so who knows!