When learning ukulele chords, it’s good to work on the rhythm, because it’s equally important. I think it’s more difficult to train a lazy strumming hand than to learn to hold chords. The strings should not be plucked as it comes along, but the rhythm should be followed.
When practicing chords, it doesn’t matter what measure you choose, but when accompanying, it’s a good idea to count the times in the song.
At least learn to follow the rhythm – Down, Up, Down, Up. Don’t play it as it comes to you, because that’s one of the bad habits that are hard to unlearn.
One, two, three, four.
This is a foundation that every player should know. It is good to practice rhythm along with learning chords. Later on, you will see from YouTube videos that you can dampen the strings while playing and it will result in a swinging rhythm. You can hear it in the song I’m Yours by Jason Mraz. Try playing it. You only need 4 chords (C, G, Am, F)
How to practice rhythm?
It looks complicated, but it’s not that hot. Of course, practice will make you a pro. Czech YouTuber Guitarontheway shows you how to practice the rhythm and master it.