If weight gain gradually occurs in, say, the five years post gastric sleeve surgery, can the gastric sleeve be adjusted/tightened/revised?

If so, is the adjusting/tightening/revising as significant as the initial procedure in terms of:Cost? Duration of time of procedure?Duration of time of hospital stay/recovery time?Or, is the adjustment/tightening/revising not as intensive as the initial procedure?Also, how often can a gastric sleeve be adjusted/tightened/revised?

Is there a limit in the number of times a gastric sleeve can be adjusted/tightened/revised?

What type of doctor performs gastric sleeve adjusting/tightening/revising procedure?

Is a gastric sleeve adjustment typically covered, in part, by insurance?