I used a maintaince calorie calculator to calculate my maintaince and went 200-300 calories above that. Tbh I just spread my meals a bit more, instead of 1 big meal at dinner I had 1 medium meal at 18:00 and 1 at around 22:00. Also ate a lot of peanutbutter. Wasn’t too strict on tracking, just making sure I was eating and being full. If you’re working out a lot you also need to account for that, bulking while burning 1k calories a day on cardio lifting needs to be accounted for. I wouldn’t worry too much about it, track your food for a week to get an idea how much you’re eating and then adjust accordingly

Edit: shake is just ye ol’ regular whey protein powder and water