Gaining

I'm really struggling to just eat a lot lately she just feeling full too quick and as a picky eater I struggle but can eat a decent amount when I'm force fed which hasn't happened in a while

Eat slow and constantly throughout the day, don’t eat too fast that you stop snacking.

Eating fast will get a lot in at once, but snacking gets a lot more overtime. It also stretches out your stomach more.

After each stuffing I have usually the week following food just doesn’t feel as good.

Consider eating 'little and often', calorie counting and finding 'empty calories'.

I personally don't like stuffing myself but I've found the above handy in increasing my intake.

So for example, I might have 3-4 slightly smaller meals at a time with snacks in between.

Something like McDonald's is good for having as meals which leave me feeling hungry a short while later. Although I don't do this all the time, subject to work and offers in the app (e.g. tomorrow they're discounting chicken nuggets).

Overall, I now eat more than I use to.