Over the weekend, Robin Thicke and ex-wife Paula Patton attended their first joint therapy session with their only child, Julian, amid a tumultuous custody battle.

Patton had been trying to limit Thicke’s time with their 6-year-old son after reports of child abuse from Thicke. In court documents filed by Patton, Julian allegedly told his principal that his famous father had hurt him.

Patton claimed in the document that Thicke had “spanked … yelled at … and grabbed [Julian] by the neck” before and that she’s “concerned that [Thicke] is engaging in alcohol and drug use while Julian is in his custody,” and that Thicke “came to Julian’s kindergarten graduation … clearly intoxicated … [at] 8:30 a.m.”

Since then, Patton reportedly attempted to deny Thicke access to Julian, and filed an emergency order to restrict Thicke’s time with Julian to monitored daytime visits only. The judge, however, recently rejected Patton’s request.

In Thicke’s responding court documents, the Grammy nominee denied any misconduct on his part, stating, “On a very rare occasion and only as a last resort, I will use light spanking, but it is consistent with the law — open hand on the butt. This is the type of discipline to which Paula and I agreed during our marriage.”

Thicke lamented that he has not physically seen Julian since Dec. 31, making the joint therapy session this weekend the first time father and son were in each other’s presence in more than two weeks.