Icloud Backup

I lost my phone, then i bought a new 13 pro max, i tried to backup from my last saved in my previous phone, its already been more than 24 hours, it still shows 145 gb left to restore out of 150 or something gb, i mean at this speed it will take forever to restore, how much time does it take to restore, my wifi speed is 100mb/s, still i m frustrated with the way it is restoring, any suggestion how can it be faster ???