Yes, if you bump cals 1000 overnight you will gain a bit of weight fast…that’s about a 50% increase in caloric intake! It still baffles me how many posters on these forums recommend insane calorie jumps, especially for guys not trying to gain back weight fast. Metabolisms don’t “break” but they are hardly static and adapt fairly quickly if you’re not diligent in how you approach a cut. Unfortunately, if you haven’t lost weight in 3 weeks then by definition, you are not in a deficit. I’m 5’11" and started my last cut around 195lb (not too far off your stats). I started my cut around 2050 cals, ended at 1500. According to online TDEE calculators I think this means I’m currently dead 
How lean are you right now? And how lean are you trying to get? I made a post earlier this year that may have some insights for your situation: When Your Cut Stalls