Are degree apprenticeships hard ?Watch
Quick guides to apprenticeships
You could speak with your employer about this and find out the modules / study time required on the course.
My university often lectured in the first semester, and then bunched multiple assignment deadlines together near and just after the January exams.
Worst case, I would work from 8am to 4pm, and then study/revise, and complete assignment work until 10pm every weekday, and study 10 hours on a weekend for about 3 months (November - January). Sometimes I’d need to do this again for a month or two near the end of semester 2. (I didn’t leave work last minute either).
Although you work full time during the summer holidays, it does allow for some relative relief since you don’t have any academic study. Though I still did 5-10 hours after work each week over summer catching up on the apprenticeship portfolio work.