Hi
@aileenmoore00 - welcome to the forum. There have been many examples of people having issues with overnight hypos as a result of using Lantus. Your first port of call is probably to change your injection time from evening to morning so that you can observe what is happening and manage it more carefully. Your other option is to basal test overnight and get up at two hourly intervals to blood test and understand the pattern.
Either of these will require a bit of consideration on your point, but both are valid approaches. If these don't resolve your issues, you may want to return to the clinic and request a change of basal insulin.