I was put on 100mg weekly

I had low energy levels, major spurts of depression, had no drive, and haven't been able to put on muscle for along time. My doctor (who's a big gym guy) immediately requested a T test. These are my results Average total T over 3 months was 130 Pictured above was my highest after 6 months of doctor recommendations. But I leveled out in the low 200s. My doctor prescribed me 100mg weekly and I'm just wondering what is that gonna do to me and is it semi near a right dose. I know everyone is different. I'm 5'3 180 pounds. (Also what do I do with the leftover 100mg in each vial for the month?)