You can do it yourself, just use a small LED flashlight curl its tail up over its back(gently) shone the light from the top, look on the bottom. If its a male there will ve 2 hemipenes one parallel on each side of his tail. You may have to wait till your beardie is a bit older for them to develop enough to be able to see them. Be careful not to burn your dragon those little LED"S can get really hot.
Hi there, sorry to read that the first baby died , I can tell just looking at it that he/she wasn't well. Did you get this baby from the same place and did you buy all your supplies there ? The tank is beautiful but a very " busy " set up is best avoided, a simple set up is best for babies not to be overwhelmed or have a hard time finding food, etc. especially for a sick baby. Hopefully their stock of beardies are not sick, the first baby should have been active from the start. Be careful of mealworms as a staple as was mentioned, and the loose shredded wood are also an impaction hazard. A plain tank with 1-2 basking logs and 1-2 rocks [ real or fake ] is ideal for babies. That's how they are set up when they're hatched [ I hatched a ton of them ] Fancier + more decor can be added as they get bigger.