In addition to doing some light training in his native Philippines, Pacquiao will fly to the United States in the coming days to begin an intense training camp at trainer Freddie Roach's Wild Card Boxing Club in Hollywood, California.
But, instead of arriving on March 8, Pacquiao is now looking to be in United States by March 2 to have extra time to prepare for his clash with the undefeated Mayweather.
"Manny called me and said it's been so crazy in the Philippines that he is going to come over here early and probably start at Wild Card on March 2," Roach told ESPN.com. "Having him early is really nice for me. We'll have Justin Fortune doing strength work with him, and then we'll begin the boxing part and start sparring."
However, Roach confirmed that he will not be at the Wild Card Boxing Club for the first few days since he is travelling to Macau on Friday.
In his absence, Roach's assistant, Marvin Somodio, will take over and help Pacquiao with his training and preparation.
Even though Mayweather has yet to be defeated after 47 fights, which includes 26 KOs, Roach is confident that Pacquiao can break the streak.
"I'm very happy, and I'm very confident we will win the fight," Roach said. "I have a good game plan for Manny, and I've altered the game plan some over the last five to six years since this fight has been something everyone wanted to see. I've made adjustments to it since both guys are a little older. I'm watching tape on their last two fights each.
"They're not the same as they were five years ago, but it's a winnable fight for us if we fight the right fight. This is the biggest fight of my life. There's a lot of pressure, but I'm not going to be nervous. Pressure is good. I want to perform, and I want my fighter to do the best he can."
However, there is no doubt that Pacquiao is the underdog heading into this fight as his recent record has been spotty at best. Despite recording wins over Brandon Rios, Timothy Bradley and Chris Algieri in his last three fights, Pacquiao lost two fights in a row prior to that as he was defeated by Bradley and Juan Manuel Marquez.
However, despite his recent record, Roach believes that Pacquiao can topple Mayweather if he adopts a more aggressive mentality and approach.
"We just need to have the right strategy to beat this solid fighter," Roach said. "Mayweather is a slick guy, and he is not the easiest guy in the world to fight. He's undefeated for a reason. He's very smart. The thing is we have to attack him a lot and have that ring generalship, and Manny has to work on cutting off the ring. Everything will come together. Manny and me have already been talking about the strategy. Once he gets here, he knows what I want from him."