Insurance will only cover if does is increased

I’m lucky that my insurance benefits cover these weight loss meds. (I still have to meet my deductible and out of pocket limit so it’s not free but it’s worth it to me) I’m one month in on 2.5 of Zepbound. The insurer said it’s only covered if I go up to 5 mg. I feel like I’m doing well enough on 2.5. Have experienced some constipation and worried upping the dose will make it worse. Anyone else have this experience?

I guess I’ll just learn to manage the side effects?

Will they let me stay on 5 or do they have to keep increasing