Remember that the weight is just a number. If you gained 5 pounds of muscle and lost 5 pound of fat, the number on the scale would not change but your physique would look totally different.
Also remember that there is no water retention from SARMS. All the weight you can is real true weight that you will keep once your cycle is over.
If you are having trouble eating enough, you could try blending your food.
Buy a high quality blender and blend together the following:
2 scoops of a high quality protein powder
oatmeal
natural almond butter or peanut butter
frozen fruit
banana
ice
chia/flax seeds
spinach/kale
You can easily make the shake 800 calories and drink it for breakfast.