Mow more often
It might be more convenient to wait for the lawn to get straggly before mowing, but doing it every 4-5 days during the growing season will keep you from cutting too much off for healthy growth. Aim to take off no more than one-third of a blade’s height at once. This leaves enough leaf tissue so that the plant can continue photosynthesis. If you get behind one week, raise the mowing height to keep from cutting off too much at one time.
Don’t bag the clippings
Assuming you are mowing often enough so that the clippings aren’t excessive, leave them on the lawn to decompose and fertilize the soil. If it looks untidy, redistribute with a rake