I know it is old school and largely assigned to cycling myths but it worked for me back then: put your legs up after the workout. Not on the sofa but literally up the wall while you lie on the floor. 10 to 15 minutes was enough. I usually only needed it for a few early weeks.
I don’t buy the lactic acid draining reasoning too much though it might. I always thought that the lower blood pressure in the legs opened things up a bit. Pure bro science, but it worked for me and an easy try.