Is the top photo an "after" shot and the bottom photo a "before" shot? If that's the case then your plant is dehydrated, needs more water. In a pot the soil can change from too wet to too dry fairly quickly. Needs careful management.

Thanks for the quick response ,they are two different plants

Top one grew v well and then started having big leaves as you see and then started drooping as stem was very thin so we decreased the water .and has become like this

i will hydrate it And follow up

Bottom one also has started having big droopy leaves therefore needed to know what can I do to avoid it become like top one

The big droopy leaves are normal. The difference between the first photo and the second is lack of water. Is that your maximum temperature? If so, before it's even winter there that seems quite low. How low are your night temperatures going? Does the soil drain fast? If not it can be difficult maintaining the right moisture level, especially with colder temperatures. It's a balance you'll need to monitor carefully. You don't want to go the other direction with the second plant and end up with root rot.

Thanks for your response! The

soil drains fast - when I water the plants, in 5 mins the bottom plate is filled with water, but we are using moisture retaining soil.

On average the temperature is in the 80s to 70s during the day and at night its in the 60s with 55 Fahrenheit being the lowest. What is a good way of knowing we’re watering the plant the right amount? What do you recommend I do in terms of watering?

Thanks again!

You always need to be more careful with moisture retaining soils. Large Mangos are quite tough plants and will often come back from severe reversals. Smaller trees are more sensitive. They've evolved in a monsoonal climate where they often get flooded out during the wet season and are completely dry in the dry season. The dry season coincides with the coolest night time temperatures.

A wooden skewer or chop stick pushed into the soil to see if there's moisture below is a common method for checking. The surface soil will often look dry when below it isn't. The leaves in your second photo are okay, but don't let them get to the stage of those in the first photo. And keep them away from cold night temperatures.

Thanks you so much for your advice .We are watching them now closely and checking the soil to see the moisture . Temperature at nights are dropping to 50s so we are covering the plants with some cotton towels to avoid the soil to dry and keep the plant from being exposed to cold air .

if it gets cold (50 s in am too)in morning would you suggest to take them in the garage or in the house ?

Better to bring them indoors. Cotton towels provide limited protection. They feel warm for people because people generate their own heat. The cotton slows the loss of that heat. A plant doesn't generate it's own heat

Thanks will do

I just Want to follow up with you

These are both the plants we discussed after watering them day and night .

The first one is looking the same but little more greener

Second one also looks little better

but I see two leaves with brown spots on them can I just remove that half dried leaf or do I have to do something else .

i really appreciate all that you do

Thanks once again

Not good to remove a leaf that still has green in it. It is still photosynthesising and feeding the plant. The brown crisp part you can break away. it's dead matter and isn't doing anything for the plant. Removing a damaged or blemished leaf makes the owner happy, not the plant. Once it is large and has many healthy leaves the removal of one has minimal affect.

Goog morning

I need advice i put my plant in soil and the next week Temp in night went in 36 but after that it is 70-80 degree bbut my plant leaves started getting brown

What can i do ? for this plant1

Plant 2 all leaves were brown so my gardner removed the leaves

The stem is strong what can do for this plant2 ?

Plant3 started having brown spots on leaves

How can i protect this plant3 ?

I am in Dallas texas and summer is going to be extremely hot

but are at present get showers 2-3 x a week