Hello everyone I need help and advice okay so I have a baby bearded dragon I believe he is about 3 or 4 months old I got him at petco he was the runt of all of them there was like 8 and he was the smallest one anyways I have a 20 long tank I had the dual lights one was a basking light the other was a reptisun 10.0 anyways like 5 days ago he looked real bad he was dragging himself and acting very lazy well I took him to the vet three days ago and they said he may be developing MBD but I just don't understand I have the 75w reptisun light but anyways I read that the tube lights are not good so I went and I got the zilla slimline desert figure 18inch t8 the vet also prescribed medicine for the calcium I was giving him calcium 3 times a day but it was without the d3 vitamin because the petco people told me that the bulb was enough so I didn't need D3 well I purchased reptivite with d3 and he seems more alert more better but he has a hard time walking it seems like he still climbs it's just like sometimes just forget to move with his body please help me I want to do everything right for him