BTW:
If you don’t want to miss the perfect time for set up your rig, you can visit this site:
https://www.aavso.org/LCGv2/
Type in the the star (T-CrB) an choose “select band” and there MA.
Pick normal date and just insert a range of 14 days.
The results show you if the magnitude is rising or falling.
Good luck! 🙂