Sugar level 63 on glucometer.

I am 40 years and got my HBA1c twice last year. In June it was 5.5 HBA1c and Sept 18th 5.2 I was 80kgs in math but started intermittent fasting - eat at 10 p.m.in the night and next day 2-3 p.m. Recently after eating at 3 p.m. I had tea around 7-8 and felt sweating and palpation and then my mom asked me to test my sugar it was 63 ml and she suggested I quickly have pepsi. I had 150-200 ml Pepsi and checked my sugar it went to 154 ml in 10-15 mins . I had a meal at 10:30 p.m. and then did a Gluco test and it showed 129 ml Morning after 8 hours it was 83 ml This happened earlier on 9th and then I check my levels were normal Can non diabetics have Hypoglycemia ? Also can someone who has 5.2 HBA1C suddenly move to higher levels in 5 months I also take uric acid medicine called Febutaz and recently started with Atrilop F