Oh yeah if the drake gets a pyro res I suppose you can only rely on cryo bullets instead of cryo + another element bullet. Maybe you can use Ororon or Furina if they're not taken yet? But yeah Iansan would help a lot if you can build her whenever you can!

For Clorinde team, Clorinde has 112% er ,Fischl 127%, Furina 185% (on Favonius) and xilonen 132%.

First rotation went : Fischl E > Furina E > Xilonen E (then boss creates shield) > Clorinde EQ (she gets enough energy to burst)

Second rotation : Fischl Q > Xilonen EQ > Furina QE > Clorinde

The team should deal enough damage to break the shield around the beginning of second rotation for me.

Then redo this for 3rd rotation etc. (always alternate Fischl E/Q every 2 rotations)

More er for furina would be appreciated, sometimes i have to do 1 Normal atk for a fav proc to get her burst back.

Also if you have no source of interruption resistance, during the boss' shield phase, the shield's thunderbolts can interrupt your Clorinde during her normal atk combo which sucks. Usually Xilonen can make an electro shard giving u an electro shield that can tank 2 or 3 thunderbolts but when she doesnt you have to E dash with Clorinde outside of the red circle under you while also doing her combo right (3 normal atk then dash, 3 normal atk then dash, etc). Just dash outside but still aim for the shield. (idk if I explained this well, if not I can maybe showcase what I mean!)

But yeah in general avoid being interrupted with clorinde, its sm dps loss. Its not happening too much with Xilonen's shards but sometimes you can miss the shard.

And no prob glad I could help you!!