12-hour Time Limited Feeding in Critical Care

Inclusion Criteria: * Adults (≥18 years of age) * With critical illness (hospitalized in an intensive care unit with a status of "ICU") * Who have received orders for continuous enteral nutrition Exclusion Criteria: * "Comfort Measures Only" status * Have orders to receive trickle feedings (feeding rate ≤10mL/hr) * Recent surgical procedure on the GI tract (within previous 5 days at time of recruitment) or admission for GI bleed * Receiving continuous sedation * Expected to undergo a procedure requiring removal of study devices in the three days following enrollment * History of malabsorptive bariatric surgery * Admitted for a burn injury * Known intolerance to feeding rates \>100mL/hr * Current diagnosis of pancreatitis, ileus or gastroparesis (only if using a gastrostomy tube) * Requiring intermittent or continuous renal replacement therapy * Pregnant or lactating * On an intermittent feeding schedule * Nutritional needs would require a rate higher than 120mL/hr on TRF12 protocol * Lack of clearance by primary physician