Math 1552 (calc 2)

I’m having trouble deciding what to do for next semester, I am currently in MATH 1550 and I did plan on taking 1552 next semester with Rios. I met with my advisor yesterday and he advised to push 1552 back because of the difficulty of my mineralogy class next semester (4 credit hours). I just feel like having the summer plus an extra semester without it will cause me to forget most of calc 1 which I know is important for 2.

Any advice on this situation?

How difficult and how time consuming is calc 2?

Thanks in advance.