Sleeping in the Sukkah in the First Year of Marriage

Greetings to the honorable Rabbi! I am a newlywed, married for three months. Am I obligated to sleep in the Sukkah? My wife is unable to join me in the Sukkah. She suffers from diabetes and sometimes her blood sugar drops at night. Her device beeps, but she doesn't always hear it and wake up. I do hear it and I wake her up and give her a sugary drink (I don't know if this can be considered life-threatening because she also slept alone before we got married). In practice, am I obligated to sleep in the Sukkah because of the first year of marriage? And also because of the diabetes? And what happens if I am at my father-in-law's house, where, if we were truly concerned about a life-threatening situation, my mother-in-law could sleep with her; but in reality, we are not truly afraid that something will happen?

Shalom!
Regarding the diabetes — it seems from what you write that there is no danger if your wife does not wake up because of the sugar, and this is how she used to conduct herself. According to this, the diabetes is not a reason for exemption.
[However, it should be noted that if the situation is indeed risky in that she does not take sugar, even if she neglects this sometimes, that does not mean that she’s permitted to do this, and you are obligated to sleep next to her].
Regarding the act of not sleeping next to the wife in the first year of marriage — there is no source for this exemption.

Shulchan Aruch, Section Orach Chaim, chapter 639