2 year old abruptly stopped milk

May I ask if this is formula (follow on) or other milk?
My toddler (now 3 years old) refused cows milk for almost 2 years since we weaned him off formula milk.
1st thing I'd say is not to panic or worry, I found that toddlers (even us adults at times) go through food and fluid phases of taking a break for a while before going back to loving it or refusing it because of something else such as suddenly disliking it.
My boy has suddenly started drinking milk again for the last 4 weeks due to being at pre school when we had hum accepted (we tried nursery previously due to working hours but it didn't work out for us due to issues with that nursery). He's seen other kids his own age drinking milk and took a fancy to having it again. He's still not a huge fan of milk but he has it simply cos he's seen others drinking it. He still only has it at nursery and he's had maybe half a cup full worth of milk at home during the last 4 weeks. I figured out as he's never seen us adults drinking it daily, he doesn't....

@Stacy Hiya, cow's milk. She was having it for bedtime routine and sometimes during the night. She doesn't have any milk now. Thanks. Hopefully, she will start liking it again.

drink it either.
If we don't eat particular types of food often, he won't try or eat it either. We've had banana phases for example. He loved it when weaning but since 1 year old he wouldn't have it at all until he went to pre school as other kids eat it and now he's loving it again. Most phases of food and fluids are shorter term unlike the 2 years my son does. Can be days/weeks/months.
Don't try to force it on them as it'll cause it to last a lot longer. Encourage it, just don't show frustration as it upsets them and they associate the food or fluid with something negative such as frustration from their parent.
We've added paediasure to his ordinary milk for the last year,the powder form of it, to ensure he still has the vitamins etc plus he's a fussy eater so he needs it for that reason also.
If it's formula milk, they don't need it from 1 year old as advised by pretty much all health visitors you'll ask. Hence why they recommend adults milk (eg cows milk or alternatives).

Paediasure is in my opinion a life saver. 3 different flavours you can choose from. It fills their stomach for longer AND has all vitamins etc they need.yes it's around £11a tub,(you can also buy ready made version) and helps my boy sleep for longer and gives him more energy through the day due to his extreme fussiness of food and fluids he's supposed to have such as fruit and veg.
For my step son around that age, at bedtime we gave toast and a hot drink (this was years ago before we discovered Paediasure) to help him sleep through the night.

@Stacy Thanks. I will take a look at Paediasure. My lo one is a fussy eater, too. Could this be due to a sleep regression? I've been waking up every 2 and half hours....tired😢

Paediasure packet/tin states to add with water but I'd spoken with several different pharmacists at different premises and they advised milk due to the extreme fussiness of food and fluids my son has. In fact, they said adding milk to it fills their stomach for longer plus its even more vitamins which doesn't hurt them due to extreme fussiness.
2 years is common for sleep regression. We have it now once more since he turned 3 and half.
If you've got amazon prime, they offer a discount on subscribe and save on Paediasure, it'll help with the costs. We started using their most basic flavour, vanilla. Now my son prefers their chocolate but still sometimes has their strawberry flavour also.
Kids often have phases like we do, just try what you can and not worry. If their bodies are begging for the vitamins and minerals, they'll communicate it in their own way (my son has speech delay so he tends to express using gestures until recently as he started pre school and using half sentences).

@Stacy thanks stacy. I have amazon prime I will see if I can get one and try it. We think she is getting her molar come out. The other night, she bite my husbands finger, so we won't be checking. Lol. She keeps getting up every 2 hours, so I thought if we could give her something more to fill her stomach plus vitamins and minerals.

Yeh it sounds like she's not only waking up due to refusing her milk at night, alongside her sleep regression plus molars bless her! Stay strong mummy! You'll get through this!

@Stacy I hope I get through it 🙏 thank you