The Hand wants him to order the Kingsguard to infilitrate Dragonstone and kill Rhaenrys and her children, eliminating the competition.mandevilleag said:
I never got the whole Alicent vs the Hand getting to him first.
Alicent does not want that to happen and wants to offer peace terms to avoid all that bloodshed.
Aegon is highly influence-able. If he ordered the Kingsguard to kill Rhanerys and her kids, nothing Alicent could do would stop them. She doesn't want Rhanerys murdered for her ambition.