The Assessment of Partial Guideline-Directed Medical Therapy Down Titration in Heart Failure in Remission.

Inclusion Criteria: * Signed and dated written informed consent prior to randomization * Age ≥ 18 years * Prior diagnosis of heart failure with reduced ejection fraction (left ventricular ejection fraction \< 40%) * Heart failure remission (defined as a quantified improvement in LVEF to ≥50% or described as a "normalized" or "recovered" LVEF on echocardiography or cardiac MRI at least 6 months prior; a normal LVESVi and LVEF during screening; no residual functional limitations caused by heart failure; a NT-proBNP \< 250 pg/mL during screening) * Treatment with at least three heart failure therapies (ACE inhibitors, angiotensin-receptor blockers, angiotensin receptor-neprilysin inhibitors, mineralocorticoid receptor antagonists, or sodium-glucose cotransporter-2 inhibitors), consistent with international heart failure guidelines, at maximally tolerated dose and stable for at least 6 months before screening. Exclusion Criteria: * Severe kidney disease: chronic kidney disease with significant albuminuria, defined as an eGFR (creatinine or cystatin C-based using the 2021 CKD-EPI formula) \< 60 mL/min/1,73m2 and a urine-albumine creatinine ratio ≥ 200 mg/g, or requiring dialysis, or a history of kidney transplantation. * Recent major cardiovascular events, including acute coronary syndromes, coronary artery bypass surgery, stroke, or TIA, in the 90 days before screening. * Uncontrolled hypertension, defined as a systolic blood pressure above 160 mmHg and/or a diastolic blood pressure above 100 mmHg despite three antihypertensive agents, assessed during a 24-hour blood pressure measurement during screening. * Atrial fibrillation or atrial flutter with a resting heart rate \> 110 beats per minute during screening * Suboptimal biventricular pacing in those treated with cardiac synchronization therapy, defined as a biventricular pacing percentage under 98% during screening. * Any concomitant current or future class I indication for the use SGLT2i beside heart failure: diabetes mellitus type II with ASCVD, or at least two major risk factors (i.e., obesity, hypertension, smoking, dyslipidemia or albuminuria) during screening. * Any sustained ventricular arrhythmias in the six months before screening. * Any untreated valvular heart disease of moderate or greater severity during screening. * Presence of any other disease with a life expectancy of less than two years. * Pregnant or lactating women.