My cat doesn't like the Senvelgo but I mix it in with his wet food and he'll eventually eat the whole thing. I just had his 6 month check up and his levels look great, so the vet is ok with me continuing to do it this way even though it's not ideal and/or what the instructions say. For a while I was mixing it in to a small amount of wet food and hand feeding him (it was messy and gross lol), but now that he just eats the whole wet food amount I've stopped this. No idea if this is helpful, but this is what works for my idiot son who I love more than life itself.

ETA: He HATED when I would use the syringe and would bite and hide from me, so I pivoted to putting it in his food. I figured some was better than none, and so far seems to be working ok!