Befree, the LF dropping to 35% presumes they carry exactly the same number of pax once the 2nd service starts, which is pretty unlikely.
The extra flexibility of a second flight will encourage more to travel with them than do so now, also a second flight will double the number of lowest price seats available so expect a few more leisure pax. The LF will drop with the extra flight, but it will pick up again over time. It is the same situation as Eos, who now have 4 flights on certain days.