Iam begining my prereqs starting with math. I like math but It takes me longer to get it, i have math anxiety

especially getting into algebra, fearful of chemistry, anyway there is about a 2 year waiting list after I get my prereqs done for our RN program. should I take a cna class now and get all the experience I can,or really.. concentrate on really getting my math and sciences down. and wait to take the cna class as I Wait 2 years for my name to come up.?. I know it seems like a stupid question,

but iam suppose to start the cna class in a couple of days and my math also. any advice?