Entering the tower of destiny was usually easy to do. But it became extremely difficult to achieve now.
He had to relax and focus on the image of the tower in his mind. Then his mind would find and enter the tower. But he couldn't do that while a predator was breathing down his back urging him to make one wrong move and be devoured.
He couldn't do it even after one hour of trying. So he returned to practicing the Life Escape Ability. It was better to do something worthwhile rather than waste his time.
He practiced it for two hours more. During that time, he managed to extend the time he spent in his miniature state. He also managed to become faster than he was normally. This meant his chances of escaping had increased.
After all, if he was small, numerous, and fast, he would be very difficult to catch. As long as there is no area of attack, his blood clones won't suffer much damage, and he will recover the bulk of his life force.