The best way for Trump to slip the grip of the Neocons would be to cut the military budget in half, like he once said he might do. From Rep. John J. Duncan. Jr. at ronpaulinstitute.org:

During the 1988 campaign, George W. Bush came to the Courthouse in Maryville, TN to speak at a rally for his Dad. As we were leaving, I told my friend and later Chief of Staff, Bob Griffitts, “Bob, he is better than his Dad.”
When he ran for President in 2000, then Governor Bush went all over the Country saying we needed a more humble foreign policy, and according to Foreign Policy Magazine, he “famously campaigned against nation building.”
The Independent Institute reported that in a 2000 debate, candidate Bush said “If we are an arrogant nation, they will resent us; but if we are a humble nation, but strong, they’ll welcome us.”
Wikipedia says Bush criticized President Clinton as being too interventionist and said: “If we don’t stop extending our troops all around the world in nation-building missions, then we’re going to have a serious problem down the road, and I’m going to prevent that.”
Because of statements like these, along with my favorable impression from 1988, and my strong opposition to Vice President Gore, I became enthused about the Bush campaign.
During all of my 15 campaigns for Congress, I held a Duncan Family Barbecue with 6,000 to 8,000 in attendance. I was very pleased when Gov. Bush rearranged his schedule just a few days before the election on very short notice to also attend.
We marched into the Knoxville Coliseum behind the University of Tennessee Pep Band, and he stood in the receiving line much longer than I expected. When I walked him back to his limousine, I said “Governor, you’re going to carry Tennessee.” He replied “If I do, I’ll win the election,” and that is exactly what happened.
That night, my son, Zane, said “Dad, I have never heard you so excited as when you shouted ‘the next President of the United States, George Bush!”
I had been a Pat Buchanan-American Firster all through the 90s, so you can imagine my disappointment when President Bush allowed himself and, more importantly, his foreign policy to be controlled by Neocons.