Very good!

At just 4 months old, let baby eat a lot every day…like around 15-20 feeders. Do make sure your supplement regimen is correct. You want to use a phosphorus free calcium
without D3 every feeding except when using a different supplement. To get vitamin D3 and multivitamins, there are (at least) 2 different regimens.
The standard one is to use a phosphorus free calcium
with D3 one feeding every other week, alternating with a multivitamin, also one feeding every other week. For example, days 1 & 15 you use the D3 and days 2 & 30 you use the multivitamin.
The other (and easier imo) way is to use a combination product such as Repashy calcium with LoD or Reptivite with D3 at one feeding every other week.
Having the correct uvb is also essential. The standard for that is a linear T5HO with either ReptiSun 5.0 or Arcadia 6% uvb. The light should be 8-9” away from basking area. If you need, this is the correct one.
https://www.lightyourreptiles.com/arcadia-pro-t5-fixture-6-bulb-22-5-sale-now-only-69-99/
Babies do like to walk upside down on the screen top so it’s best to elevate all lights at least a few inches above the screen to prevent burns. I use cheap dollar store wire baskets to raise my lights, but there are special things (Repti risers?) you can buy on Etsy.
Temp should be no higher than 80 until baby is a bit bigger. Daytime humidity should be between 50-70%.
Providing lots of safe live plants to drink from and hide in/under and lots of little ‘roads’ of branches and vines will make your little one very happy.
Provide a feeding station that can easily be reached and seen, preferably just a couple of inches below basking level.
Having all of these things be correct will also effect baby’s appetite and general well being.

Thermometers and hygrometers shouldn’t bother baby unless it has an ‘eye’. Things with dark circles look like predators‘s eyes.