Qualifing for a second morgage , im a co borrower on a loan

[Eli K.]

Hello im about to co sign on a loan with my Mother on Monday,  she is the primary borrower and we will live together in the house , i want to be able to qualify for a loan to buy a rental later on , i heard that if she make the payments for 12 month from her account i can get the loan payment out of my dti when applying is that true ? And i believe the house will be in both of our names will that affect anything in a bad way ? Thanks guys