Definitely leave the eye alone. If there is something stuck there then it should come off in the next shed (assuming it is a full shed). I actually had an eye that was dimpled and crumpled once, with no retained eye cap, but after the next shed the eye was back to normal. No idea what caused it but it isn't hurting anything.

Did the little guy eat in between the two weigh-ins? If so, and he hasn't defecated yet, that may be where some of the weight came from. Either way, some weight will be retained after defecation, and with every meal he should put on more and more weight. Congrats!