Change Job after EU1 Form submittion

So not a situation i want to be in but we submitted my wife's EU1 form but my current job stressful and complicated and worried my job there not overly secure...been offered a new job that i can start in 2 weeks, they met my wife may even employ her once her application done said will send me a new contract, is it ok to switch and let the immigration know this? or could it jepodise my wifes application? new job offer will def be less stressful and moneywise its the same and best part is my wife could get a job there with me later

There is no problem with changing job as long as you tell them (they might call your employer so they need to have the current one).