Will this give me enough energy to work?

I’m sad that I have to cut my fast at day 5, but I have work on Sunday night (it’s Saturday morning atm). I’ve fasted before but can really recall my energy post fast. Currently I’ve been so weak I can barely walk much & my job is physical restocking, lifting & unboxing supermarket products. It’s only a 5 hour shift but I’ve just been permanently hired 1 day per week & I CANNOT afford to mess this up.

Ik this isn’t refeeding food but I brought a cheese sndwhich today too have later. Do you think if I eat that today & something tomorrow ile have the energy to work? I’m vegetarian with no eggs. I considered just adding cream to coffee but was scared my digestion wouldn’t cope, also considered nuts but thought that wasn’t enough, maybe it will be tomorrow. After work I wanna go back to fasting, trying to break a really bad sugar addiction despite being a normal weight but I have mass trouble starting a fast, hopefully it’s easier this time.