iPhone 17 Pro Max primary eSIM connectivity issues

I have two eSIM from the same provider, one is a personal SIM and the other is a Business SIM.

I recently upgraded my phone to iPhone 17 Pro Max and since changing my phone I am constantly seeing performance issues with my primary SIM. Data disconnections, poor coverage, or even no coverage at all. The second eSIM remains connected without any issue. I have tried resetting network settings but it hasn’t resolved the issue.

I will contact my carrier but given the nature of the symptoms, I feel this is a phone issue. I was looking to see if I could swap the order of the SIM so that SIM 1 (or the one that displays on the top) becomes my business SIM instead of my personal SIM to see if the issue transfers to the other IMSI.

Any testing I can do my side? I feel that the carrier isn’t going to fix it.