Questions for those on Toujeo

I was on Lantus since it hit the market was moved to Toujeo in November of last year.
My Endo said to take 80s units of Toujeo because that was what I was taking for Lantus, but over the course of the first month I was hyper (10 to 15) I was having to inject high amounts of Humalog just to stay close to my normal range (4 to 6). So I just started adding 5 units a week to what I was taking until I started to normalize, when I got back to my normal numbers I was up to 100 units of Toujeo so NOT pleased at all as a pen only last 3 days with the forth day needing to be split with another pen = I'm paying 350.00 a MONTH for my back ground insulin supply which means I can't afford it each month so have started to learn that I can actually take it every other day and still have decent control (4 to 8 instead of my 4 to 6 control).