Your progress sounds excellent. Just need to find things that are more pleasant to get down the gullet. To increase protein, try getting some whey protein powder and making shakes. You can add different things to it to give a different taste. Peanut butter gives a flavor when mixed in.

What seems more important to you is getting the variety rather than the heavy need to gain weight. You did not lose much at all so gaining weight will come along on its own due course. Just make sure you are getting enough of the basic food groups and plenty of water/liquid.