17M, 5`5 48KG(105lb) to 68KG(149lb) in 1 year

started working out on august last year to try to recover from anorexia. although i was training consistently until february, was still scared of eating, so didn't progressed much. things starterted getting better around may and been getting bigger and stronger since. currently eating 3200cals and doing a PPL 6x/week. thinking about switching to an U/L split 5x/week focusing on the upper part, any suggestions?