I made the comments to get the answers i needed to figure out if your cha eleon is ok or not. Its the same reason that inneed specific answers.
If he's not gaping and his breath is not raspy then he likely doesn't have a respiratory issue.
A baby chameleon is growing so it should eat more than two or three of the proper sized crickets every day. Because crickets have a poor ratio of calcium to phosphorous it's important to dust the insects lightly just before feeding them to the chameleon at almost every feeding.
We also recommend that you dust them twice a month with a phosphorous-free calcium/D3 powder to ensure that the chameleon gets some D3 without overdosing it and leaving it to produce the rest of the D3 from its exposure to the UVB. D3 from supplements can build up in the system and lead to health issues...D3 produced from exposure to the UVB light won't as long as the chameleon can move in and out of the UVB at will.
It's also recommended that you dust twice a month with a vitamin powder that contains a beta carotene prOformed source of vitamin A. PrOformed sources of vitamin A can't build up in the system like prEformed sources can so this way you don't overdo it... but it leaves it up to you to decide if/when your chameleon needs any prEformed vitamin A.
You still didn't tell me what you feed or gutload the crickets with so I don't know if your chameleon's diet is good enough to keep his bones strong as he grows or have good muscles, etc.or if you need to improve it.
As I said before, supplements can cause edema and improper supplementing can also cause kidney issues and that can cause edema.
If he's not growing he won't shed.