u/masculinecharm

Hi so right now im sat at 80kg + 5’2 and my BF would like me to start gaining weight in mid august, he wants me to be at LEAST 100kg by Christmas/ the end of the year which im totally ok with doing btw. The only problem i have is right now my BF has me eating roughly 3500 calories a day and I wanted to know if anyone could give some tips on how to steadily gain over those 4 months because im scared of taking it too fast and hurting myself. Additionally I walk around about 3000 steps a day.
Thanks for reading!! :))