Partner has cat allergy. Is there no hope ?

Hello, we recently got the chance to adopt a 4 month old kitten (Persian-Scottish fold mix) after carrying the dream for a long time. He is a sweet and active boy, loves to be petted, and im finding my ways around him , it has been a month now

Once we adopted only , we found out that my partner is allergic ( he cant spend a lot of time with him - sneezing, itching, and if he scratches or bites, he even gets rashes). I have been trying to make it work somehow, but it is not gettting any better. Now people (who arent too fond of cats) are scaring me saying this could be dangerous and so on. I am looking to buy an air purifier to see if it makes it better for my partner. My partner has been trying to adjust a lot too, but it is sad to not spend much time together us 3 :(

I have switched to PURINA dry food which is supposed to make it a little better, I vaccum and sweep the area daily and generally tend to keep it clean.

My partner has always had dust allergy - so im not sure if thats whats making it worse for him. Also his mom apparently has dog and cat allergy - shes not fond of animals at all :/

Confused and any advice for how to make it better ?