Work experience vs AS-level in Gap year

Hi,
So I am taking a gap year and I am wondering what you guys consider to be a better use of my time. So I got work experience in a biology lab which is highly connected to what I want to do in my career. However, I've been wanting to do AS Maths during my gap year and think that I will not be able to manage both things as the job in the lab requires a lot of time (especially since I already have a weekend job{that I kind of need financially}). What do you think? I don't find maths hard But if I don't do it almost everyday day I just forget... I don't want to waste the work experience opportunity but I don't see what other time I'll be able to do the AS since I'll be busy with uni next year.
Any suggestions are welcome

Which course are you going to be applying to?

What A-levels do you already have?

Posted from TSR Mobile

Medicine and Biomed. my A-levels are in biology, chemistry and psychology.