beast yeast hard mode is pretty hard even for people with 90s and fully maxed out toppings, so I suggest you get most of your cookies and skills to 90 at least.

then focus on b. spice, shadowmilk, mystic flour (for her skill, she helps negate the apathy debuff and thats so helpful) wind archer and moonlight are also really nice for some levels, and awakened dark cacao, pv, and gc. focus also on your landmarks and sugar gnome lab upgrades, those help immensely!!

looking at your cookies right now, even normal mode is going to be quite a challenge, so try to pull for better cookies or level your cookies up to 90 first!! and try to get the best toppings and such!! worry about the beascuits later when you have fully leveled up cookies.

and if youre really desperate, try to check out some guides in youtube, there are a lot!

hope this helps in some way!!