The joys of working while pregnant

Currently 30.5 weeks and currently working full time 40-50 hours at one job with an additional 12-16 at another. I get maybe 5-7 hours of sleep a night, but on my days off my part time job I try to sleep in a little more. Any other moms work crazy hours late into their pregnancy? The hardest part is just being on my feet most the day, since the labor isn’t really that intense it’s just surviving the foot pressure and leg swelling. What do you do to keep yourself going? I’m doing my best to not run out of steam before she gets here... I am doing my best to insure I have $$ set aside to handle bills on my (unpaid) maternity leave. My boyfriend is involved and financially assists, but his income won’t be enough for everything, so I don’t have any other option but to work as I am for as long as I can. My baby is my motivation and has kept me going thus far, but I feel like I’m running past empty and on fumes. Part of me thinks this is just good baby prepping since I’ll likely barely be sleeping when she gets here anyway...