Look, I am all in favour of maintaining a low hba1c but ..... if I get too many hypos I lose hypo awareness.
This has happened 3 times in my life - both pregnancies (healthy kids now in their twenties) and a couple of years ago when the libre allowed me to maintain pregnancy sugar levels and hypos.
The libre no longer agrees with my body so I do 50 blood tests a week and I now maintain slightly higher hba1cs (low 50s) with a return of hypo awareness and less than 1 hypo a week. I concentrate on avoiding extreme highs and lows and though my hba1c has been lower I think my time in range is better. And I still have hypo awareness (just, after 50 years my hypo awareness just isn't as good as it used to be.)
The only way for me to control my weight appears to be by going low carb and every hypo undermines this. So I work hard to avoid the hypos and maintain the low carb. I've reduced my insulin by about 20% (ish) and am finally achieving some weight loss along with reducing hypos and rebound highs. Having said that, I have a family history of T2 so risk double diabetes, which is another reason why reducing carbs works well for me.
Watch your basal - mine has gone down by 25% since I've gone slightly lower carb and increased my exercise - if this is too high you have no hope of avoiding hypos.
Good luck.