Pediatrician Really Insistent On Giving Baby Shellfish

My 9.5 month old daughter's pediatrician is really insistent on me giving her shellfish. It is part of introducing allergens early, and I get where he coming from on the ones I haven't done yet, but shellfish is the hard one. I told him that we were Jewish and keep a kosher kitchen at home, but he kept saying she needed to be introduced to it. I am torn on what to do here and could use some guidance from any other Jewish parents that ran into the same.

On one hand I don't want to put her at risk, whether from accidental exposure later, or if she chooses to nosh on tref later in life.

On the other hand, we are Jews and should not be eating shellfish, and I have no means to prepare it, masserate it into a paste and feed it to her without making my kitchen, or at least utensils, tref. Not to mention I wouldn't even know where to start on cooking it properly so I don't give her food poisoning.

Have any of you run into this? How did you handle it?

EDIT: Thanks for the advice everyone. I will stick to my guns and tell him no when he brings it up again at the 12 month well-baby check up and tell him that I cannot sustain exposure to it. She only has soy to go before we have introduced all the common allergens otherwise, so he will just need to accept it, and if he can't he can put the referral back in the health authority's queue.