the right way: I would say it depends on your what your capabable of.
but at LEAST 1/4 of the time you usually learn.
if you can, learn half the time you usually learn a day,
if you learn 9 hours, try to learn 4 1/2 hours.
If you leave the torah for 1 day it leaves you for 2 days.
However there is an Inyan of resting up a little bein hazmanim
to be refreshed for the New Z’man.
may i suggest learning a little bit halacha,
Inyona D’yoima like Hilchos Chol Hamoed, or Succah.
Hatzlocha Rabah!