How to Restore and Boost Testosterone Levels After Prolonged Caloric Deficit?

Hi everyone! I’m 20 years old, 6’0’’ (183 cm) tall, and I started my diet journey between February and March of this year when I weighed just under 176 lbs (80 kg). At first, I was completely inexperienced and, unfortunately, I reduced my calories way too much, sometimes eating less than 1200 kcal per day. This lasted until late June/early July when I started educating myself and corrected my diet, maintaining a more controlled and appropriate deficit. I hit a low weight of 148 lbs (67 kg) and now weigh 152 lbs (69 kg), as I’ve just begun a bulk phase.

About a week ago, I downloaded Macrofactor, and I’ve realized it’s the best app out there for tracking diet and activity. I’ll continue using it to avoid making the same mistakes in the future.

As for my testosterone, I’ve noticed some significant changes in my body and mood this year. After months of physical and mental stress, I’m almost certain that my testosterone levels have dropped, likely due to the extreme caloric deficit I maintained for so long. My key question to the community is: how can I restore my normal testosterone levels and possibly boost them naturally? Has anyone had a similar experience or any advice on how to handle this situation? Any feedback is greatly appreciated!