Honestly, I just do two 1minute stretches, one when I wake up, and one just before I go to sleep. I also do dance, so that’s the reason I only stretch for a small amount of time
In the morning and middle of the day I stretch for 1-3 minutes. I search for "stretching at work", those exercises are usually simple and don't require any equipment. In evening I can dedicate 15-20 minutes to stretching. Usually with the help of a mat and bands.