Lets pick this apart one bit at a time.
First off using " Feel " of pressure on the controls is a very poor indicator to maintain a constant altitude during a turn, assuming your intent is to maintain a constant altitude during the turn.
What I do before I roll the airplane to the angle of bank I plan on using is look at the picture out the windshield to see what it looks like in level flight by referencing the terrain I am looking at, I check the altimeter as I roll the airplane to the bank angle I want and monitor the altimeter as my primary instrument for level flight during the turn.
Using the airspeed indicator as the primary instrument will result in a roller coaster pattern of altitude control in the turn due to airspeed indicator lag which will result in constant pitch changes caused by chasing the air speed indicator needle.