Auto populate Custom Memo ID field in InfoPath

I’m currently working on a SharePoint list and have been asked to develop a new form for when an Item is added to the list. I have the new form completed except for the final edit. I have a column Named “Memo ID”, on the new form this field needs to be automatically populated to the next Memo ID # when you open the form by clicking on add new item in the SharePoint list. For Example: Memo ID # of last item added to list is 202010. When the form opens up to add a new item The Memo ID # should already be 202011.

I’m new to SharePoint and InfoPath, any help would be greatly appreciated.