Others gave some good tips -

You might not have to mow much the first year - mostly just to keep the annual weeds cut back.

Generally once established - I mow when the Blossoms are 2/3 full in the field. I do not like to let white clovers go to seed - the plants lose their vigor more quickly and they spread through the roots anyhow.

Usually this equates to 3 times a year - General dates to remember are Memorial Day, 4th of July, and Labor Day. Its always best to mow just before a rain. I like to leave the cuttings on - and not fertilize 2x per year.

Some years I add P&K in the spring or fall.

Good luck

FH