Long acting insulin

I've been experimenting some with my insulins because my numbers are all over the place. For the last week I haven't taken the 120 units of Toujeo Max I'm prescribed and my numbers haven't been over 200 all week. I usually wake up to 220-250 and in the evenings before bed I'm often over 300. My last A1C a week ago I think was 7.4. I am still using a sliding scale Humalog quick pen and I've been taking almost half my normal doses this week. And just for reference about 10 years ago when I found out I was diabetic my first A1C was 18.