It's easy to burn out when working from home. Try to establish bounds, and resist urge to e.g. work for whole day doing long breaks during the day (e.g. from 8 to 12 and then from 16 to 20) if you do this for prolonged period of time you'll feel as if you are working non-stop.
Keep in mind that temporary productivity loss is expected. Some permanent productivity loss may be expected. Major productivity loss if you need to care for dependents when working from home is expected.