Oh I believe you- I've seen some huge transformations, with older, malnutritioned beardies- and hell just a baby BD within a few months- my 3 month ols is 14 in. long, and was only 2 weeks and 4in. when I first got him! He had been a little malnurished, but it wasnt too bad yet. But yea, it sounds like your doing everything great, keep it up!!
And yea- it says "Reggie AKA lil' dude" on my sig., but thats b/c I'm too lazy to change it- weve been calling him Fat Boy for the last few mothslol