You can purchase the entire wheel bearing assembly. It is just a simple 4 bolts. Although, other parts need to come off first. Wheel, caliper, rotor, axle shaft nut. Takes about 1.5 hour per side as a DIYer with a floor jack and jack stands.
It is not hard work or difficult. But here again, delaying will only make things worse.
FWIW, I just did this work to my Gem2 about 2 months ago. Truck had 135,xxx miles on the OEM bearings. Parts came from NAPA for much less $$ with a 3 day delivery to my door.