Hi and welcome Ame and Mooshie. It's the best place you never want to be. As Elizabeth said, what is happening is probably bouncing, and Mooshie might be getting too much insulin.
For the experienced members to be able to review and evaluate to determine if this is happening we need you to do a couple of things.
First, create a signature so that Mooshie's information is available whenever you post.
Setting up your signature (light grey text under a post). Here's how:
click on your name in the upper right corner of this page
click on "signature" in the menu that drops down
type the following in the box that opens: kitty's name/age/date of diabetes diagnosis/insulin you're using and dosage amount /glucose meter you're using/what (s)he eats/any other meds or health issues (s)he has. You can add your name, and a geographic location (sometimes the country/time zone matters) Be sure to SAVE when you are finished.
Another thing that will help us help you is to set up a spreadsheet like the one we use here. You will see how the trends and patterns emerge, and members can review his/her progress before offering suggestions or advice:
http://www.felinediabetes.com/FDMB/threads/fdmb-spreadsheet-instructions.130337/
http://www.felinediabetes.com/FDMB/threads/understanding-the-spreadsheet-grid.156606/
Try to plug in the insulin and testing data you have so comparisons of the BG numbers from the previous dose can be compared to BG numbers on the current dose. We usually recommend that increases and decreases in insulin doses be made in 0.25 U increments, so we don't bypass the correct dose.
If you need help with the spreadsheet or are unable to set it up because you might be using only a cell phone or a tablet that doesn't play well with Google (Amazon Fire) we have members who can set it up for you. Then you can use Google Docs and Google Sheets on your cell phone to enter information to the spreadsheet.
As soon as we get some testing data then we can tag in some of the experienced Lantus users to advise and get working on the issue.
Very best wishes going forward Ame, hoping to get to know you and Mooshie better.