To view the months of the current year, and only the months, use this format - it only takes the months of that year. It can also be restricted so that a certain number of months is displayed.
<input class="form-control" id="txtDateMMyyyy" autocomplete="off" required readonly/>
<script>
('#txtDateMMyyyy').datetimepicker({
format: "mm/yyyy",
startView: "year",
minView: "year"
}).datetimepicker("setDate", new Date());
</script>