Yes, he seems to be much more cautious and happy to play with his pad far often than before. But one can attribute this to him not being as attacking as before just because he has developed. I guess it is understandable. When you're young, you're carefree and happy to disrespect the opposition. Take the example of most of Bangladesh's current crop--they try and dominate the bowlers every ball. I think his psyche has just developed as any normal human being's--and he's always going to be more in doubt than he was when he was young.
It's a shame because Sachin is regarded as one of the top players against spin, and it is sad to see him get out because he is in a defensive mindset. That is why his treatment of Adil Rashid in the tour match was particularly special for me. He took the attack to the spinner.