I would highly advise against it. Pasta contains a lot of starch and when you blend it, you’ll end up with a very unappetizing, sticky texture, that can actually become a choking hazard.  If you’ve been doing purees, I can understand your anxiety in moving forward with texture. However, it’s really essential that in minimizing texture aversion and picky eating down the road. If you feel like you’re stuck on purees, I’ve got incredible resources for you!