Ah, your initial post says you weigh 213 - any chance that's 313?
In that case, you could probably lose 2.5 to 3 pounds a week.
If you average 1% of body weight a week, and start today at 313, you'd hit 250 at the end of June. So I vote for doable.
The changes you've already made will keep you losing weight for awhile (a couple of months, I'd guess) if you stick with them. When your loss slows down, tweak the plan - add calorie counting, or macronutrient goals, or more exercise, or different exercise, or something.