Yes you can you make small adjustments over time do the equipment and the type of surfaces you get used too. This is especially true if you commonly bowl at the same centers or use the same ball for long periods. I was an old urethane guy who hooked it a lot and had a high rotation. I recently changed over to a resin ball and when I first started throwing it I really had to raise my speed to keep it where I wanted it. I noticed after about 2 months of throwing the new ball my rotations were down and I was putting the ball where I wanted with less effort. I asked my coach about it was afraid the ball was absorbing up too much oil already and know he showed me at what points I had changed my release without me realizing it. I would suggest working on staying behind the ball and trying to accelerate your arm through your release as some ways of restoring some of your rpm's or just don't worry about it I have found I am more accurate the way I am now and just considering buying a little more aggressive ball.

Absolutely!
I went through the same thing when I moved to the Midwest where I was practicing on undressed lanes and bowling tournaments on wood.  My "natural" speed and axis rotation changed greatly from bowling on beat up wood lanes so that it took a bit of tweaking to score again once I moved back to the West Coast.

Yup...in a few weeks

And it may help if you went thru the classroom session...