When this happens under legit medical treatment the approach is to change brands. or take a year long+ break, or both.
Since you can't really change brands, and have more flexibility than a doctor would you have another option.
If it is antibodies, it's possible simply going to a higher dose will make up for the increased immunity.
Increasing the dilution rate so your injection is between .5ml and .8ml can help minimize immune response. The more concentrated the dose is, the stronger immune response will be.
Changing the location of the subq shot will change the lymph node involved and also potentially lower the immune response.
Finally, an IM shot will lower immune response for sure, if you can handle that.