When to start the ovulation kits

J.o.i • Ttc baby number 2 .Fingers crossed for everyone x
Hi all , we're tcc #2 .According to glow my peak day is sat 8 feb . I was just wondering should I start using my ov kits now , hubby works away during the week and I'm on night duty Sunday 9 , feel like taking a sickie to maxcimise my chances lol