First time with new bf...

So I recently broke up with my old boyfriend and am now in a new relationship. Me and him are going to have sex pretty soon. But....his dick is like twice the size of my ex's and I could hardly handle my ex's(even though it was small 😂) and I'm a little bit scared of the pain 😶 any suggestions to make things easier besides lube? 😂 thanks so much 😢😂😂