A few things that you can do immediately.
1) exchange the UVB150 ( only rated at 5% UVB ) for a 26W UVB200 ( 10% UVB ) & and install a basking globe near as you can get to one end of the VERY SMALL TANK.
2) get a some cable ties ( long enough to wrap around the nano- or micro- hood you have sitting on top the tank )
cable ties like this
3) push the cable ties through the mesh ( in the lid ) to form 2 loops ( one at each end of the nano- or micro- hood ) , slip the hood into the loose loops under the mesh lid, then tighten .
4) check the 26W UVB200 is no further than 8 from the basking spot ,this will ensure adequate UVA and UVB .
5) throw out the analog dial thermometer , the type of thermometer you have at the moment are worthless and some are as much as 30% out , so it might be 30 degrees off , I strongly recomment you replace it with something like
https://www.amazon.com.au/Digital-Thermometer-Refrigerator-Freezer-Temperature/dp/B07KJBVZWX/ref=asc_df_B07KJBVZWX/?tag=googleshopdsk-22&linkCode=df0&hvadid=341791782407&hvpos=1o4&hvnetw=g&hvrand=221158612902473677&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9072216&hvtargid=pla-802322017831&psc=1
( you need one at each of the following locations :
> ontop the basking spot ( tape the probe to the basking spot - using cloth tape )
> one dangling in the air in the warm zone
> one dangling in the air in the cool zone
> wont hurt to have one under the hide too.
A bunch of digital thermometers will give accurate temperatures that you can see at a glance at any time , noncontact (gun) thermometers are OK but you have to learn how to use them properly to get accurate temperatures.
Ensure basking spot temperature IS NOT HOTTER THAN 40 degC.
Ensure the warm zone is about 35 degC.
Ensure the cool zone is about 28 degC.
What are you using for a basking globe ? is it colored ?
I think you are going to have trouble achieving a good stable thermal gradient in tank shown , I'd recommend upsizing to a tank twice as long ASAP.
You might get a better result if you retire the nano- / micro- hood and UVB200 for later and invest in an 80W or 100W MVB and ceramic e27 reflector hood , I'd cut a hole in the mesh lid to allow the UV to travel unshaded from the MVB to the basking spot.
A 80W or 100W MVB will provide heat , UVA , UVB and bright light and will likely be best solution for the tiny tank you have .
What size insects are you trying to feed the hatchling ?
This thread will offer some guidance on what to give a hatchling to eat , ie feeders that are best, feeding schedule , supplementation .
viewtopic.php?f=45&t=244111&p=1859195#p1859195
Once
a) you have the UVA levels right ( UVA levels impact on a dragon's vision ( they see UVA ) and their appetite is influenced by UVA levels , too low ==> poor appetite ) and you need very good levels of UVB to support metabolisation of dietary calcium and to promote the photosynthesis of VitD3.
b) you have the zone temperatures and basking spot temperatures are set up correctly .
…. you should pretty quickly see a increase in basking, and a better feeding response.
It is OK to assist feed a hatchling who is refusing to eat , here is some guidance on who to do this :
viewtopic.php?f=18&t=235583