What kind of soil is it in? How many holes are in the pot? I wouldn't prune it until you have more foliage on it. Have you been using citrus fertilizer?

I'd wait spring (for you?) is almost here and prune it when you put it out for summer. I'm sure the heat and outdoors will wake it up. I'd never buy another meyer lemon again after owning 3 (1 I killed, 1 is a cutting, and 1 is a premium graft) they just don't behave as well as the other Citrus indoors, I'd get a pure lemon not a hybrid

The soil is a mix of putting soil and orchid bark mix. It's very well draining. I have been using neptunes fish fertilizer, not specific for citrus but definitely better than nothing and no chance of overdoing it.

The house is forced hot air so it is dry all winter, but it's in direct sun and has never been neglected as far as watering or fertilizer.

Try using a citrus specific fertilizer and Osmocote Plus and see how it does. I read using fish emulsion is not good to use during the winter so I don't, but use it regularly during the outdoor growing season.

Pull off the blossoms so that the trees focuses only on vegetative growth. When it blooms again keep pulling them off until you are happy with the foliage. When a citrus tree is stressed and thinks it may be close to death it starts putting out lots of blooms to increase seed propagation. Organic fertilizers like fish fertilizer are not very good for container plants, especially indoors. They require bacterias in the soil to break down the ferts into something the plant can use and these bacterias are not going to be in the soil of an indoor container plant.

Sorry Ken, I have to disagree with you on the pulling of blossoms and organic fertilizers. Where do you get your information?

The tree needs to go through the blooming phase on its own. If you continue to pull off the blossoms, it's just going to regrow them as it's caused by the hormones in the plant. I witnessed this myself with scions I sent to a friend. The scions were in the bud forming stage when I cut them off the tree and removed all buds and leaves. When my friend grafted the scions, they put out blossoms rather than new leaves when the graft took. I had a dying tree put out stress blossoms and removed them only just to be replaced. After the tree has gone through the bloom stage and, if fruit has set, remove the fruit and let the tree focus on regrowing foliage. My tree recovered with a lot of TLC.

Fish emulsion and organic granular fertilizers are excellent for container plants, just not during the winter time. I use both monthly on my 26 citrus trees outdoors and they love it. The reason why it is not recommended in the winter is due to the lack of heat to help break it down. During the winter time, use liquid fertilizer at half strength.

Meyers are often regarded as PITA. I have one and I certainly can say the same :0 Good luck though.

I get my information from years of experience as well as having been taught by people with many more years of experience than I have. For organic ferts to work properly you need the microbes such as many forms of bacillus, Trichodermos, rhizopogons.

You take care of your roots by utilizing their ability to form symbiotic relationships with beneficial fungi and bacteria. These relationships help your roots intake nutrients.

Beneficial microbes break down old root material, and provide nutrition.

On top of that, microbes provide aeration so oxygen can reach further to penetrate more into roots. They also capture nitrogen and help make phosphorus more available

When these microbes are not in your soil the benefit of organic fertilizer is much less as there is nothing in the soil to break down the fertilizer into a form that can be used by the plant.

Ok, so I repotted as the previous pot was on the narrower side. I was surprised to find that the rootball was narrow and deep, and I'm wondering if it was not getting the width to grow as needed. I used the same soil mix, slightly acidic, well draining, very fluffy. I also took the suggestion to use Osmocote Plus as someone suggested and now I'll play the waiting game. I'll make sure that i pick off most of the fruit after blossoming stage and let the tree focus on foliage instead this season. It'll be heading outside in a couple of weeks most likely as we get into that warmer outdoor night temps and hopefully it can make a full recovery.

One last question when it come to our citrus trees as they move outside for the summer...what to do when it rains too often to let the soil dry out. I'd hate for them to develop root rot because they just received too much water.

In a sunny outdoor position, rains don't seem to be an issue for me with a well-drained potting mix. I had copious rain last summer and they loved it, though I was initially leery.