My wife isn't currently on my insurance plan, so she's not a factor in this.

We're expecting a new baby at the end of February/early March. Currently enrolled in the cheapest insurance with a $6,000 deductible. Our company's open enrollment doesn't follow the calendar year - it starts every year on May 1.

When our baby is born at the beginning of March, that'll qualify me for a special enrollment where I can add the new child and change insurance plans. I'm thinking at that time I'll change to the most expensive plan with a $500 deductible/$1,000 max out of pocket, let the hospital bill the $5,000ish costs that the newborn incurs (mom's cost are separate and should be mostly/fully covered by her parent's insurance). I'll pay the increased premium for 2 months or so that come with the expensive plan (only a few hundred per month), until open enrollment in May, where I'll change back to the cheap insurance plan with the high deductible. This will hopefully allow me to have a very low deductible when the baby is born, but only have to pay the premiums for a couple months..

Is there something in this logic that I'm missing or that won't work?