FYI, Horlick itself is a sugary drink. Sugar is not a poison. I'm just pointing it out.

What do you mean you rest 1-min per rep? I guess you meant rest 1-min per set and 2-3 mins per exercise?

I would suggest you bump up the weight and do less reps. Increase your strength with low rep workout since you don't build muscle with hypertrophy training as you're at calorie deficit.