The M15 Nakhon Si Thammarat events are part of the ITF World Tennis Tour M15.
The first will be held from Feb. 19-26 and the second from Feb. 26 to March 3 in Nakhon Si Thammarat.
The Vietnamese player, who is world no. 549, is seeded fifth and sixth at the two tournaments with the draw to be conducted early next week.
Nam is expected to return to his highest place in top 250 in 2024. He is also on the lookout for a new foreign coach to improve his results.
In Vietnam's Davis Cup Group II playoff earlier this month, Nam won two singles match against world no. 748 Philip Henning and no. 416 Kris Van Wyk.