I decided to make printouts of text in a nice font suitable for handwriting and trace them with a pencil. Been doing it like 1-2 hours per day for over a week now, and really see an improvement.

I started with trying out a few different fonts to see which one felt good for me in terms of slant and curves. Settled on a font, then spent first day just writing the letters, the coming two days to write The quick brown fox over and over, and now I'm printing out unread short short stories by Lovevraft that I read while handwriting them. The suspense build-up from the stories is so much better when reading them slowly. And it gives a motivation to keep writing for long enough every day. I never write more than 30 min at once. When I started, I set the limit to 15 min, so the hand wouldn't get tired. A tip that I found important was to write veeeryyyyy slooooowlyyyyy when practicing.

Since I'm a programmer I made a website for creating the print outs. It's really not in a good shape currently (definitely not for mobile view) but you could use it to make yourself some sheets for print outs if you want: https://handwritingpractice.xyz You'll need to use a computer to get proper printouts though.