When having gastric sleeve surgery the surgeon will usually make small cuts which takes less time to heal and recover from than other surgery that requires larger cuts.
After you have gastric sleeve surgery you'll usually stay in the hospital for 2 to 3 days and then full recover takes around 3 to 5 weeks.
After a few days your stomach should begin to heal but your stomach should fully heal from the gastric sleeve surgery within 5 weeks and then you can return to your normal activities.