Different people feed on different schedules. A lot of people feed their snake every 7 days, on a set day. Then others feed their snake every 5 days. That adds up to like an extra 5-10 meals a year. Then some breeders feed their snake every 3 days for the first year then back off to weekly. Each feeding causes them to grow quicker/slower. My Anaconda is 8 months old, and I feed her adult mice, I want to step up to something bigger, and start feeding her every 6 days so she'll put a little weight on.