Celts vs Norse mass TA

I'm having a real hard time playing vs norse mass TA.
As Celts, what can I do in age 2 to beat this?? Mass slinger + druids?
If yes, how many.

I'm reading the guide made by Andy Pierce and here what it says:
"
○ Defending Norse and Their Damn, Dirty Throwing Axeman

Norse Throwing Axeman pose a particularly difficult match-up for Celts. Throwing Axemen are
infantry who have armor and bonuses against both infantry and ranged units. Ideally, they
should be countered by anti-infantry cavalry.
But Celt has no such unit and can’t even make a Stable until Age 3.
I have seen a few theories on dealing with Throwing Axemen, all of which involve a healthy
complement of Druids: (1) outpop them with infantry, (2) kite them with slingers, (3) race to Age
3 for Bowmen and Forts, and (4) pray to god until you can spam Horsemen.
No matter what, nothing is easy for Celt v. Norse, and you are probably going to try everything a
few times before you find something remotely promising.

Since it is hard to find a consensus on the forum, the best I can do is this:
■ No matter what, start with a Double Rax TC. The question is whether in
Age 2 you focus on infantry or whether you jump to Age 3 for Fast
Fortress into Bowmen/Druid Ball.
■ For the love of all things holy, scout.
■ If your enemy is aggressive (big army, multiple Barracks before 2nd TC,
etc.), then you need to hunker down in Age 2.
■ On maps that are large or open, focus on Longswords. But beware
that their advantage is greatest when the armies are small.
■ On maps that are small or have narrow aisles, focus on
Slinger/Druid kiting. But beware that slingers aren’t effective until
you have a bunch (more than 10). The more the better.
■ If your enemy is initially passive (mining stone), it could be either a fast
2nd TC or a Tower Rush.
■ If fast 2nd TC, then do Fast Fortress into Bowmen/Druid ball.
■ If Tower Rush, fight it off with spears with longswords and druids
mixed in."

I was told to turtle until age 3 BUT, their the Norse. They can push with towers.

Please, I need some light about this.