>>11379224
Hell, some might even make her futa or body swap you two. We've got ALL of the hentai classics.
But your job, aside from being cute and getting flustered?
Use that magically good memory of yours to remember what each one, and every combination does. It will come naturally to you, as naturally as the memories of your old life. You will also remember some things you learned before... but some memories may need you to "learn" what they really meant again. You're young and stupid again. Remembering how you got caught masturbating once might make you think about how to get away with it, sneaking into your witch mother's room when she's away to jerk it to her panties... only to realize you just came in them and she's going to be home in five minutes oh god-
Suffice to say, you'll have to build WISDOM again. Not to worry though, she likes you like this. You can probably set up a PC for her Etsy shop or tell her how to fix a car, while also being cute and pliable enough to act as her chair while she waits for the panties you ruined to dry.
In potion making, your memory will be more than up to the task... but your now less than wise attitude towards your libido may cause issues. What if you lied? Said to put in something that would make you feel good... you don't WANT to be a frog boy again, after all!
Well, you can. You might tell her what potions make a dick growth potion as a lie, hoping to get to fuck her... only for her to see through it and drink it before you, can, asking you to bend over once she sprouts one herself. She might let you drink it, and experience the side effects. As it turns out, trying new combinations won't always do what you expect it to. Satyr fur made you feel good? Well, too much and you'll be a cute goat boy with a fluffy butt and "handlebars" for a week (but still very hung).
The funny thing is... your mother, the witch, will let you make these mistakes, so long as you understand you can't get out of working because of them.