I would think so but I'm no expert. YOu might try PM'ing Tracie (Drache613--I think), she's very knowkedgeable about beardies and she may be able to help you with your water dargon.
Know it's a wee while since you posted message but have just joined. my water dragon went through the same thing and he loved the baby food. He was particularily partial to HIPP Organic raspberry and blueberry. After a couple of weeks on this he started eating crickets no problem. Still can't get him to eat fruit or veg but he still gets baby food as a treat!!