My gp started me on 1 once a day to be taken with my biggest meal. Tricky because I have 3 main meals all small lol. After few weeks was increased to 1 twice a day before biggest meals so before breakfast and evening meal for me. Have had a couple of really low readings during the night and one hypo in evening and was testing several times a day. I'm lucky in that my gp has agreed to prescribe me libre 2 sensors to monitor things. Mostly because this medication can cause hypos. It's worth pleading your case, you won't get if you don't ask. Maybe see if you can get one of their free trial ones first, which is what I did and used the results of that to ask for prescription.