If he doesn't take any action the coming few days you can rest assured that there wasn't enough evidence to use the insurrection act or to declare a national emergency. However, if there is such irrefutable evidence, Trump has a legal obligation to respond. And he will...
Now we wait.
There wasn't enough evidence?
Surveillance video showing election fraud being committed in real time that POTUS is aware of is not enough evidence in your mind?
If POTUS end up not declaring national emergency. that does not mean it will be because there is not enough evidence. There is also courage factor involved when POTUS is faced with back stabbers left right and centre.
Unless the good factions in the military call him and advice him on how to deal with this mess using the military then Trump may not have the courage after being faced with so many back stabbers in his own party. At the end of the day he is only human.