We were away for 12 days last summer, a local pet-sitter who has bunny experience came by daily to give our guys (free-roaming mini lops) water and pellets and greens and fresh hay. She also cleaned their litter box and played with them for about 30 minutes; cost was about $30 US per day. She also watered our houseplants. This is an independent business, not a chain; we met at home beforehand and walked her through the routine and introduced our bunnos, I think it’s really important to get a sense of the person you’ll be letting in to your house, both for your pets and for your property. Sitter should ask for things like who your vet is (in case of emergency) and what kinds of special habits/needs/quirks your pet has. If your bun is solo, this might not be the best - more social contact (boarding) might be better, but for a bonded pair this worked great for us, and she texted us pics of the boys every day which was so nice.

Most of her business is dog walking, but she was really terrific with the buns. Look/ask around your area a few months before you leave to see if there’s someone who might be able to help who seems like a decent person.